The old one always worked...the new one (same size, just a lot newer...440, or 450 maybe?) has its share of issues...its a 20hp twin and it runs like crap most of the time...the local small engine guru has taken several stabs at fixing it (as I have myself) and it continues to elude running properly. It also likes to break the stub shaft coming out of the hydro motors if you try to push dirt with it too much...never had drive issues with the old one...it was slow, but trusty!
