I just got my Scag 48" walk behind back from my dealer. When mowing in 2nd or 3rd gear, it would kind of lull and then it would lurch forward.<p>According to the dealer, when the mower was set up for sale, the gear shift was improperly installed (ie, instead of attaching to the top of the bracket at the transmission, it was attached to the bottom, which made it extremely hard to change gears and put the transmission in a bind. He attached gear shift correctly and told me this should not have caused any damage to the transmission. Was he full of BS or would this be true?<p>Also, I've had trouble turning the mower off. The key switch often won't kill the engine. Even if I leave it in gear and let go of the operator presence levers, it will continue to run. He looked at this also and told me it had been corrected. However, when I got through using the mower this afternoon, I could not kill the engine with the key switch nor by letting go of the operator presence levers. So if definitely looks like he was full of BS on this problem. I will be taking mower back in for this problem. Any suggestions/comments on how this problem can be corrected?<p>Any assistance will be greatly appreciated.