Have a problem with a pair of 8 speed ergo shifters was wanting to see if any one else has run into. I have 2 pairs one pair has only word campagolo on them the other pair has chous on them. From my understanding ergo levels came out in 93 and then in 95 started putting groupo name on them.My problem is went to rebuild one with campagolo only on lever and was replasing gsprings and g spring housing. the gsping housing is flat on bottom and uses 2 roll pins to hold into shifter housing. From the campy web sight only can get back to 94 and it shows housing with 2 nibbs to hold into shifter housing.Any one know where I could get the flat g spring housing.