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Thanks for the reply, Rob. Guess there were a couple things I shoulda mentioned in my original post. First, the tires ARE on 24" rims...like I said, it's a light-duty industrial, not an ag tractor. Having said that, my dad tells me the sidewalls don't wrinkle at all...I'd think with that much sidewall, they'd be wrinkling like crazy. Unless, that is, I'm still running too much air pressure. Kinda afraid to go below 5 PSI, though. You were right about my having the 172 C.I. engine; however, I have a Select-o-Speed tranny. I've found 5th gear to be about the best...the first four gears are S-L-O-W! I've tried shifting 6th-5th-4th in the past, but that seems to do less good than just keeping it in 5th. There's a big gap between 4th and 5th, so that when I downshift, I lose virtually all of my forward momentum. Another thing I meant to mention is that all the tires I mentioned in the first post are short/long bar. I'm having a hard time understanding why fluid wouldn't help. It would seem to me that it wouldn't matter where the weight on the back half of the tractor is located, as long as it's pushing the tires harder into the dirt. I've seen lots of guys put rear wheel weights on when they run in more than one class...doesn't that have the same effect as fluid? Kinda like putting a 5-gallon bucket of water on your shoe as compared to balancing that bucket on a 2x4 four feet above your shoe...doesn't matter how high the bucket is, it's still pushing your foot into the ground! Well, I've been known to be wrong a time or two before! :) I'm just trying to get some tips on how I can become a little more competitive. I sure ain't lacking in the horsepower department; just trying to get that power into the track! Thanks for the help... Pat
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