ok, as most of you know, i just had a 2008 52" toro ZTR that had cutting issues. so i got a refund on it and then found this scag walkbehind for $2000. Its a Scag SWZ Hydro Walkbehind 17hp KAW 52" Fixed deck, with a sit down attachment, which sucks... so im looking for a sulky now.... 1st ...its not cutting right. it leaves pushed over, some what cut grass in the middle of the 52" swath. The thicker the grass i get into, the worse it gets. I have sharp blades on there. I tightened the belts and idler pulleys, but it still leaves the grass. 2nd... I cant figure out how to measure the hydro oil in it. its just a big black resevoir directly under the controls, and it has no measuring stick or anything. I want to make sure that i have enough in there. what do i do? Last but not least.... CAN I put a VELOCITY PLUS deck on this mower??? Because, that would solve all my cutting problems.. Thanks, and ill get pics up later if anyone wants them..