corrects merch specifications to use form factor default of 80

For VOLUME and BFVOLUME keywords, form factor (field 6) Was defaulting
to a form factor of 0 (contrary to current FVS keyword guide) which may
mess up volume calculations.
reverts back to merch specifications without setting a default value

following add'l feedback from FVS team, apparently FVS is not using
default form factor of 0, so not going to assign all species to form
factor 80 by default, will let FVS choose appropriate default.