Oh Mea Culpa,
I think my memory has been playing tricks on me. On Suntour, and ONLY on Suntour derailleurs, you can swap the cages without swapping the pivots and springs, because it has this unusual H-shaped nut holding the cage to the pivot bolt, which is visible on the back of the cage.
I am sorry, I no longer thing VxGT and Cyclone pivot bolts are the same. I think the VxGT and Cyclone cages are the same, but the bolts and springs may be different.
Sorry Bob, and CR mailing list. I swapped the cages, not cages+bolts.
- Don Gillies
San Diego, CA, USA