rebuilt engine about a year ago, complete top end on my 2003 450s foreman. should have done the cam chain when I did top end but tried to save money. 3 months later my tensioner went bad. so yesterday I finally decided to replace tensioner that I have had for 3 months. pulled top end back off replaced tensioner, cleaned all parts and replaced. fired the old girl up and she was purring like a kitten. rode around for a while checking out for leaks and etc. only thing I found was valves needed readjusting let cool down and later in the afternoonb readjusted. rode it for 12 miles and parked nothing was wrong. went back out a hour or so later went to fire up to go to neighbors house and when it fired up sounded like the starter was hung, shut it down and started again still starter was hung, so I shut it down again and started with pull rope. no problems. went to leave neighbors house after a few beers and it wouldnt start it would only click so Iwent to pulled the rope but wouldnt pull. I then jacked it up and put in 5th gear and tried to turn the wheel and at first wouldnt turn after rocking back and forth finally broke loose or at least I thought. I then pulled the timing plug out and spun the wheels but the flywheel is not turning. so I took the pulled start off and put a socket on the flywheel and it was tight so I turned in the other direction and loosened up and then went back to the original direction and got tight again. I am stumped any suggestions anyone, any help is greatly appreciated.