The spacers are seals and both belong in the BB; if you remove either of them the driver side cup/retainer will not support the bearings. The record double BB is 102mm symmetrical (the triple is 111mm asymmetrical), so there shouldn't be more spindle on one side or the other. When you say you installed the BB, did you actually torque down the non-drive side? The drive side of the cartridge usually will not bottom out in the cup/retainer until it is torqued to spec. I don't know if this will help but the parts diagram is in this pdf form Campy.
http://www.campagnolo.com/repository...spares06_A.pdf