I just bought a used Scag 36. When i demo'd it everything seemed to work fine. Now I am hoping I don't have a problem with the transmission. When it's in first and sometimes 2nd gear, it takes off hard and pops a wheelie, I figured that was pretty normal, and it may be...but then after you pull both handles and the let them out again, it's like it goes back in neutral. If you just tap the lever it engages again and then does it again. It is mostly in 1st gear but it has done it in 2nd too I believe. Is there some kind of adjustment, or something that could cause this other than the transmission? Other than this problem, the mower works great and does not seem to have many hours on it. Hard to believe it would have a bad trans so soon. Thanks for any help.