We blew a motor on a Scag 48 Tiger Cub with a FH641V Kaw. I need to remove the PTO to change out engines. However, after I undid the bolt that threads into the crank, the PTO appears to be a little more difficult to get off (stuck). I don't believe there's anything else holding the PTO on but I don't want to bust up a good PTO by forcing anything (I'm already having to spend $1000 on a new engine). Should I put a gear puller on it? If so, should I use a hydraulic puller or s it safe to use a threaded one. Thanks for the help.