I have a 1-month out of warranty (~100 hours) 915b that i noticed recently was leaking transmission oil. I took it into my john deere service department who reported that the topseal and filter seals were leaking. To replace them they are asking ~$114 for parts and $745 in labor. I find it odd that both transmissions are leaking. Anybody else have this problem? Also, the labor costs are killing me...anybody do the work to reseal a transmission? is it something a DYIer should be able to do?