Trev, if when I had built it I had set the wheels back a couple of hundred mm it would tip it slightly forward with a bit more weight on the ball but the way it is it is right on the balance point. When I build these rusted out ones I just run the grinder around the base, coming up 50/70mm so where I cut is above the rust in the sides. The guards remain attached so when I build the new chassis I put the wheels back in the original position and everything should fit