Ok so here goes.I wanted to upgrade these and ran into a few snags.I wanted to upgrade these to a TPC+ cartridge and instead the bike shop ordered a CID cartridge.Is this a better setup than the TPC+?Also the cartridge is for a 203mm fork and mine is a 180mm.I measured the cartridges and they cam out the same length.Is there a difference in the cartridge length at all for the 180 and the 203?the other question is the new cartridge ihas an inset air valve.Anyone know what to do with this?Thanks in adavnce