Hi, I just bought a used Tiger, model STT61-22KA / serial # 4350781. I will be using it to mow just my yard, about 3 acres. I did a search on Scag TT and have been reading all the old posts. Very informative site. I have some questions that I would like to ask about taking care, and getting the best life/performance out of it. I bought it from a local Scag dealer that I know, and like, very well. It has 1500 hours on it and I paid $3200 for it. It is in very nice condition. It has the standard deck (squared front edge), I think. It has a new back frame and drive shaft. Dealer told me old shaft caused back end to crack and this was an updated style. I just changed all the fluids. I used regular 20w-50 engine oil for hyd. Should I change it out to synthetic 20w-50? I printed off the manual from the Scag web site. It shows a baffle, and it is on the deck, it mounts inside the deck on the backside of the discharge opening. It also has the baffles/shields on the backside of the deck that follow the pattern of the blades, but nothing under the front side of the deck. Are there any other shields or anything I should do to get the best cut from this deck? What year do you think it is? I read something about the Kawi motors - bigger carb only difference between 22hp and the 25hp? The blades look to be the Gator style, I would guess. The lift portion of the blade is serrated, about 5 little blades on the wing/lift portion of the blade. Sorry about the long post. I guess what I am asking is, what is the best set up and best things I can do to this mower to make it the best it can be? I live in northern Illinois, don't plan on mowing when it is wet, and want to mow as fast as I can and still have it look good. Please don't tell me to get another mower Again, sorry about the long post. Thanks for any information you can give me!