[Phil Waterman]

Hi

I've read with interest all the comments and suggestions, this type of problem is of course not limited to Carriers.

So please let us know how your various corrections work out and do they solve problem of temperature related sticking or difficulty shifting.

I've had a similar problem on Ford Truck transmissions of this vintage, in that case the transmission had been assembled from the best parts of a couple of transmissions with a few NOS parts thrown in for fun. In that case the problem was finally traced to gear on the spline shaft having a slight mismatch in machining and wear. That problem was only finally found by putting the various assemblies in the oven and heating them to operating temperature between 130-150 F. Discovered then that one of the gear clusters that slid smoothly at room temp bound up when heated. Fix a little careful polishing of the slide shaft.

Cheers Phil