Just my opinion but the SS Trans is the worst shifting trans i ever owned...Bar none !....But it is what it is...
transmission synchronizer
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I flushed it last night after draining it and put synchromesh in with a bit of amsoil. Then put 400 miles on it today. It's shifting better, even in all of the other gears, but still won't downshift from 5 to 4 without bumping 3rd to sync it.
Yet another winter project. Either convince the dealer in replacing it or I'll do it myself.