fork info
	fk spr - perch
fk_balspr
	fk dim 00 - air bal spr
fk_bv
	fk dim 01 - bv assy
	fk dim 02 - bv ck
	fk dim 04 - bv stem
	fk dim 06 - bv icrod
	fk dim 07 - bv icpist
	fk dim 08 - bv icspr
	fk dim 09 - bv cap
fk_mv
	fk dim 10 - mv assy
	fk dim 13 - mv cup_sc
	fk dim 14 - mv stem
	fk dim 16 - mv rod
	fk dim 16a - mv push rod
	fk dim 17 - mv bolt_jambnut
fk_ctg Top out spr at fk dim 10 or 18  [mv assy, ctg assy]
	fk dim 18 - ctg assy (w/mv assy cpl)
	Optional Dimens   fk dim 19 - ctg subtank   fk dim 20 - ctg tube
	fk dim 21 - ctg seal_assy
fk_tubes  [seals]
	fk dim 22 - tubes [=fork]
fk_air_mv
	fk dim 23 - air mv assy
fk_air_ctg
	fk dim 24 - air ctg assy