IDK if this machine is technically a "GT" or not, but it is a rider mower and a commercial one at that.
What I have is a Woods 1250 zero turn. 12HP Kohler Magnum, 44" front mount fabricated deck, twin Eaton 7 series hydro's, Late 80s vintage, at the time woods owned grasshopper.
grasshopper sold the same machine (just a different color) as a model 1210 or 1212 (there was a "before/after date" there)
Anyway I have had this mower about 6 years, and love it. I got it in non running condition cheaply, and once I drained the water and put gas in the tank, and pulled the bowl and sprayed gumout where ever I could it took off and ran.
I have tried gator blades, wasn't that impressed. they have low, mid and high lift "stock" blades for this mower, I have stock high lifts on there now. Other than a couple belts, I just put its 2nd battery in since I got it. I love the turning radius, and how fast I can zip thru my yard. The only thing I don't like is that usually I have to double mow because it sometimes lays the grass down and then pops back up. It don't matter how s-l-o-w I make the 1st pass or how FAST I run over it the 2nd time, I still usually gotta double mow. Even considering, I still get my mowing done faster with this mower than any other mower I have ever had.... the only things that came close are my Bunton 36 and 48" wide area walk behind commercial's.
I have cut ALOT more grass than my own yard since I got it, and have made more with it than what I paid for the mower...
My thoughts are that the "follower", (I don't know what else to call it) the half round "wall" that follows behind the back side of the cutting edge of each blade, isn't all there any more, it has been "patched" by a PO. I was thinking I could make a new follower with something like a PEXTO roller and cut what's left of the old one away and weld a new one in place. Would this have anything to do with the need to double mow most everything I do, with this machine?