December 2020 Diesel Bolens HT20 snowblower

I didn't get to finish the driveway from earlier in the week when we got 10" of snow because i broke the blower so im trying to finish up what was left. Not far into the run I break another shear bolt on the auger. Tractor is repowered with a kubota 2 cylinder diesel with the pump turned up. Blower is a Berco i adapted from a husquvarna tractor.