I have searched all week for a place to get some help and good advice. Just bought a 99 Murray 17.5twinII 46" hydrostatic. Went to look at it and started fine, idled smooth and throttled up perfect. Tried it out and ran great, so I took it home. Mowed my yard with it a few days later and about 20 minutes into the mow it started decreasing in power and would not hardly back-up and was slow in pulling a small incline, problem started getting worse by the minute. So i put it up. Tried it out a few days later, same out come ran fine at first and then started acting up. Noticed a few drops of fluid under the rearend when I put it up. Does anyone have any experience with these things?