I am assisting in repairing our L2. The problem is that the bearing on the drive side of the threshing cylinder went out. Replacing the bearing isn't the problem, it is taking off the hub that the pulley mounts onto. It would not come off. We ended up cutting it. Now the problem is that the hub and pulley we had was an eight bolt and all of the parts books show only a four bolt. Does anyone know what is special about this and if switching to an four bolt hub will be a problem? Thank you.