Hello, merc 200 20 hp 1973 trying to remove flywheel from shaft. Got the nut off and put puller on flywheel and can not get it to budge?? i did remove two 7/16 bolts from the flywheel hub as indicated on the flywheel. (lightening energizer. Got any idea's??? This one seems really tough even tried and 1/2 inch impact on the puller nut and still flywheel did not budge?? would appreciate any help, thanks <br /> ryan