hello all I got a problem with a 727 wont stay in gear longer than 40 seconds then there s nothing just revs up the motor, if I let it cool down it goes into gear for another 40 sec s ran good when I put it away last year, and now shows way over full on the dipstick and ive never added any oil to it. I had the header get caught on the ramp door of the trailer unloading it ,hung it up bad couldn't go forward or back till I jacked up ramp door.cant get under car as its lowered but don't think I caught linkage,just guessing but maybe a seal inside let go any thoughts much appreciated thx