Gary,
said the comments were'nt directed at you persaonally!!!
As harsh as the comments were we Love these cars and the guys willing to put up with them.
several things come to mind ~
1~ clutch actuation/adjustment (could need lube on the mainshaft?)
2~ shift linkage mis-aligned either at the shaft or in the tranny
3~ shift shaft bushing (at trans) worn out/oil soaked
IF you are sure the clutch is adjusted perfectly then I would inspect the shift shaft bushing at the trans for softness from oil that leads to deformation that leads to difficult R gear selection (requires 2 people, one shifting, one carefully examining)....honestly, the trans is one of the most perfect parts of the car...there are a few known problems but all minor....any hunt for an issue requires several steps of elimination.