We have done all the hard work and spent a lot of money in research for you and these parts that I am now selling are the best and will be the right type of upgrade that will give you the best benefits.
YOU ARE BUYING BEAST UPGRADE 7:
# Nylon Gear Set
Please lubricate on installation
# Best practice to do the bearings when you install the gears.
Any stripping of gears will be from incorrect installation of gears or other parts or a failure somewhere else.
Please use new gearbox screws when installing and make are the gears are working correctly by found a manual rotation by hand.
Make sure your plunger is nicely lubricated with correct oil.
The most common problem with stripped gears is the 2 gearbox halves not screwed back together properly due to the original screws not holding. I've seen this happen a hundred times. Make sure there is zero gap between your gearbox halves and all screws tighten with a bite and they should tighten hard especially around the motor. When installing a motor make sure it sits right down into the half moon seat on the gearbox shell.