I have a Cabellas grinder and I bought the 50lb mixer at BPS to attach to it. I used the mixer for 1 min and 40 seconds before it broke . After looking on line and calling Blue Sky it is a common problem with the way they welded the idle pulley in the gear box . Long story short if you get the 50lb mixer from BPS or cabelas before you use it i would take the gear box off and open it then either weld or JB weld epoxy both sides of the gear box where the idle pulley goes .