A dunnage conversion machine, comprising: a frame having laterally-spaced support members (; a support coupled to the frame capable of supporting a supply of sheet stock material; first and second expansion members (190 and 192) rotatably coupled to the frame for rotation about respective parallel first and second axes of rotation (194 and 196), the first and second expansion members (190 and 192) being spaced apart to receive an expandable sheet stock material therebetween; the laterally-spaced support members being pivotably coupled to the frame to support lateral end portions of the first expansion member such that pivoting movement of the support members changes a position of the first axis of rotation of the first expansion member relative to the second axis of rotation of the second expansion member; and an adjustment member coupled to one pivoting support member of the pivoting support members, characterized by: the adjustment member having a plurality of sections, with at least two of the sections having a different thickness (259 and 260), where the adjustment member is selectively positionable in any of a plurality of positions such that the sections of differing thickness are positionable relative to the first axis of rotation to adjust the position of the one pivoting support member in any of a plurality of positions, and where adjusting the position of the adjustment member changes the position of the first axis of rotation relative to the second axis of rotation; and a biasing member disposed between at least one of the pivoting support members and the adjustment member, where the biasing member applies force to the adjustment member to maintain the adjustment member in each of the plurality of positions. a frame having laterally-spaced support members (; a support coupled to the frame capable of supporting a supply of sheet stock material; first and second expansion members (190 and 192) rotatably coupled to the frame for rotation about respective parallel first and second axes of rotation (194 and 196), the first and second expansion members (190 and 192) being spaced apart to receive an expandable sheet stock material therebetween; the laterally-spaced support members being pivotably coupled to the frame to support lateral end portions of the first expansion member such that pivoting movement of the support members changes a position of the first axis of rotation of the first expansion member relative to the second axis of rotation of the second expansion member; and an adjustment member coupled to one pivoting support member of the pivoting support members, characterized by: the adjustment member having a plurality of sections, with at least two of the sections having a different thickness (259 and 260), where the adjustment member is selectively positionable in any of a plurality of positions such that the sections of differing thickness are positionable relative to the first axis of rotation to adjust the position of the one pivoting support member in any of a plurality of positions, and where adjusting the position of the adjustment member changes the position of the first axis of rotation relative to the second axis of rotation; and a biasing member disposed between at least one of the pivoting support members and the adjustment member, where the biasing member applies force to the adjustment member to maintain the adjustment member in each of the plurality of positions. the adjustment member having a plurality of sections, with at least two of the sections having a different thickness (259 and 260), where the adjustment member is selectively positionable in any of a plurality of positions such that the sections of differing thickness are positionable relative to the first axis of rotation to adjust the position of the one pivoting support member in any of a plurality of positions, and where adjusting the position of the adjustment member changes the position of the first axis of rotation relative to the second axis of rotation; and a biasing member disposed between at least one of the pivoting support members and the adjustment member, where the biasing member applies force to the adjustment member to maintain the adjustment member in each of the plurality of positions.