I have a snow thrower for my B112 and I have a few questions. It is actually a Simplicity Red and White attachment. I can't seem to find the exact model. The one I have has a couple of blocks with springs behind them that basically go over the front axel. I am wondering how these should be adjusted and what they are supposed to do. The manual I have does not have these blocks, instead there is a cut out in the frame that obviously fits over the axle. The Parts manual I have for the 42" snow thrower is identical except for these mounting differences. Can anyone point me to the Operators manual for this unit.