I have a feeling that this may be a common problem. I recall several years back when I ordered a rebuilt rack from Jorgen they had to go through several ZF cores before getting one that they felt was useable. The TRW cores didn't have the same problem so they were really trying to convince me to go with one of those but I was set on the ZF.
BTW, great thread - it will get cleaned up and go in the FAQ when complete.
Note, Rotunda tool kit TKit-1987-MER is often available on eBay and it's specifically for rebuilding this rack. Not sure if it would help much - it would appear it's certainly not essential.
Joe- Is your thread for rebuilding the TRW stand-alone or part of your overall project thread?