I have started the swap of a 261 into my 39 ½ ton. After I bolted the bell housing on and slid the fly wheel in place I ran into trouble. I planned on using the fly wheel from the 39. The crank on the 39 did not have any line up studs on it, but the fly wheel had a hole for one. When I tried to put the 39 fly wheel on the 261 it has three line up studs on the crank. I'm not sure what to do, any ideas how to handle this?