A system for bonding a structural component to a rail that comprises a bottom surface, a first sidewall extending from the bottom surface, a plurality of blind holes defined in the bottom surface, and a second sidewall extending from the bottom surface, so that a channel is defined by the bottom surface, the first sidewall, and the second sidewall, the system comprising: a plurality of spacers, each comprising a stem and a top portion, extending substantially perpendicular to the stem, wherein: the stem of a given spacer of the plurality of spacers is configured to be positioned in a corresponding one of the plurality of blind holes such that a longitudinal axis of the top portion of each of the plurality of spacers is parallel to a longitudinal axis of the channel, at least a portion of the structural component is configured to be positioned into the channel such that the structural component rests on the top portion of the plurality of spacers, the stem of each of the plurality of spacers comprises a first side, a second side opposite the first side, a third side, and a fourth side, opposite the third side, the first side and the second side of the stem are substantially flat and are parallel to the longitudinal axis of the channel, and each of the third side and the fourth side of the stem has a radius of curvature, corresponding to a diameter of each of the plurality of blind holes. a plurality of spacers, each comprising a stem and a top portion, extending substantially perpendicular to the stem, wherein: the stem of a given spacer of the plurality of spacers is configured to be positioned in a corresponding one of the plurality of blind holes such that a longitudinal axis of the top portion of each of the plurality of spacers is parallel to a longitudinal axis of the channel, at least a portion of the structural component is configured to be positioned into the channel such that the structural component rests on the top portion of the plurality of spacers, the stem of each of the plurality of spacers comprises a first side, a second side opposite the first side, a third side, and a fourth side, opposite the third side, the first side and the second side of the stem are substantially flat and are parallel to the longitudinal axis of the channel, and each of the third side and the fourth side of the stem has a radius of curvature, corresponding to a diameter of each of the plurality of blind holes. the stem of a given spacer of the plurality of spacers is configured to be positioned in a corresponding one of the plurality of blind holes such that a longitudinal axis of the top portion of each of the plurality of spacers is parallel to a longitudinal axis of the channel, at least a portion of the structural component is configured to be positioned into the channel such that the structural component rests on the top portion of the plurality of spacers, the stem of each of the plurality of spacers comprises a first side, a second side opposite the first side, a third side, and a fourth side, opposite the third side, the first side and the second side of the stem are substantially flat and are parallel to the longitudinal axis of the channel, and each of the third side and the fourth side of the stem has a radius of curvature, corresponding to a diameter of each of the plurality of blind holes.