All the threads i have read people have done the GR mod. Since it requires some rewiring i decided to go with a direct replacement for my 74. however after getting the starter off the new one has some fitment issues. It wont seat with the flywheel. Then i put them side by side and the gears are in totally different locations. Do i need to shim the new one to bring it out? Anyone else have this problem? See attached and thanks in advance!