ok-- i just got my '79 evinrude 85hp all put back together form a partial rebuild and i'm having a start problem. when i turn the key, the starter spins like crazy but it won't move up to engage the flywheel. the first time i tried to start it, the starter moved up but didn't seem to move up enough, like the teeth were just barely mating up on the very edges. any suggestions or help would be appreciated. thanks