AVB with these Powertorques there is 2 different length cranks but the longer crank is not that common , they did this so that so they could fit PT's straight onto a base that was used for Briggs without having to use a 20mm spacer under the Briggs. In John's situation it was a case of making the deck sit level when they were fitting bigger diameter rear wheels and the only reason for the bigger wheels was they were then classed as an upper level model. I did come across a newer Briggs with a short shaft because it was fitted on a pressure washer. I did contemplate fitting that motor onto a Powertorque base without a spacer because this would have the shaft the right length but then this caused the motor to sit too low and the fuel tank fouled on the body
