Never neglect to re-seal the gearbox with RTV soon after you have discovered the appropriate mix. Even even though they are known as “gaskets”, they will not seal your gearbox on their possess.
If every 
little thing looks regular, attempt altering the equipment-mesh. This is completed with the mylar “gaskets” that sit in between the principal gearbox circumstance and the input/output caps. Try out incorporating or getting rid of some of these spacers right up until your gears have roughly 1/8″-1/four” of cost-free enjoy. Specialists can get replacements ($one-2) in v
arying thicknesses, but we recommend the quick and soiled strategy of slicing your personal out of a sheet of mylar.
“Groaning”, “creaking”, or “popping” all audio sort-of related above-the-mobile phone. The very best issue to do is to disassemble your gearbox and consider a seem at the gears and bearings. The problem will typically current alone in the way of broken/lacking equipment enamel, toasted gears (like that image on our property page), or blown bearings.
My Gearbox is Groaning/Creaking: