First of all, thanks to everyone for the advice, ideas, and such that I have been poaching from this site during my first year in business. My question regards belt drive walkbehinds. I have an Exmark Metro 36". Anytime the drive belts get wet at all it turns into a 200 pound push mower. I can't figure out a way to get the belt any tighter. The belts are in good condition, not stretched or cracked. Can you use belt dressing on the drive belts, or does it not let them slip when they need to? My father-in-law suggested belt dressing. He grew up on a farm, and they used belt dressing on everything, but they don't have anything like a walkbehind that needs to let the belts slip. Thanks for any advice. Can't wait to get the hydro.