Hey guys... I think we went a bit off-topic (again!).
It is the man that gives us this forum that asks for help!
Michael, I don't know if you got any further with this or if Ron contacted you. I hope the ones that have allready installed an RS kit will help soon (Jim??). In the meantime I will speculate a bit.
Given that the bushes and everything in the kit are the
proper ones, and if the secondary spring is there for the rattling (as per Mats), there might be a possibility to
compress the top bush by cranking down the helper spring and thus give more shock travel. That will raise the car of course and it will have to be adjusted from the torsion bars again.
This might prove to be totally stupid but I haven't seen any close-up photo to determine how big the top shock bush is.
Good luck.
Petros. Transaxleista!