Im trying to fix a 5 rib and have changed a couple of gears on the main shaft and pinion gear but they all match. The problem i'm having is that when i press on the spring and 4th gear first gear locks up . Its got some thing to do with the pressure from the spring or at least i think it does. Any help would be appreciated thanks .

Sounds like a missing snap ring inside the gear stack somewhere. Double check to make sure something is not missing.

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Buy the best and cry once.

i had one do this a couple months ago. I put a new stock first gear and sync ring on and it kept locking up. What I found was the gear was too wide (from bearing surface to brass ring) so i turned a little off the gear at a time till it quit binding. Don't know if thats the same thing you have going on or not

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Maybe you should chug on over to mamby pamby land....

I think I found the problem the first and second gear slider hub out of one trans was a little taller than the other. I swapped the the inner part of the slider and fixed the problem. Or i think it did any way should know for sure tomorrow . THANKS FOR THE IN PUT AND HELP