T-5's weren't built with
POWER SHIFTING in mind.
After talking with Don Jr. at D&D he said that if you break the imput shaft you need to replace the lower cluster gear, so they mesh correctly or you will wear it out and break. The Tremec's work in the same fashion. I have the updated shaft but I think if I went with a Cobra imoput shaft and bottom cluster I could get a roller bearing for imput shaft and get more preload, which may help.
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