I recently replaced my '34 stock flathead with a stock '36 flathead. With the engine now in place I cannot get the exhaust pipe to mate up with the exhaust manifold. It seems that no matter which way I turn or twist it I cannot get it to fit on the manifold and through the hole in the frame. The oil pan where the starter fits is in the way. I removed the starter and the steady rod but no help there. What am I missing??