got a question for you fellow mower guys, bought a 1996 yardman. got pretty cheap because it needed a little tlc. only issue it had was as the drive belt got warm it would slip and wouldnt move, i replaced the drivebelts and all that. after i got that situated i went to start it and when i went to try to start it the blades on the deck would start spinning while the engine was trying to start. ive checked everything and i cant find anything. btw its a manual deck not an electric. another thing is that i had a seal leaking on the crank, so i replaced that and within five minutes all the oil leaked out. i went to the local mower store and i asked the guy that sold me the seal if there was a high pressure seal along with the one he sold me and he just looked at me like i was an idiot.needless to say he wasnt very helpful. thing is this mower runs very good and its in good shape. its a 17.5 briggs, any help on these issues would be appreciated!