Do not overlook to re-seal the gearbox with RTV right after you’ve discovered the proper mix. Even although they are named “gaskets”, they will not seal your gearbox on their possess.
If everything seems regular, consider adjusting the equipment-mesh. This is accomplished with the mylar “gaskets” that sit in between the primary gearbox case 
and the enter/output caps. Consider introducing or eliminating some of these spacers right up until your gears have around 1/eight”-1/four” of totally free engage in. Pros can get replacements ($one-2) in different thicknesses, but we suggest the swift and filthy approach of cutting your possess out of a sheet of mylar.
“Groaning”, “creaking”, or “popping” all seem kind-of related in excess of-the-telephone. The ideal thing to do is to disassemble your gearbox and just take a appear at the gears and bearings. The problem will typically present by itself in the way of broken/missing equipment enamel, toasted
gears (like that photo on our residence web page), or blown bearings.
My Gearbox is Groaning/Creaking:
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