I had the Desser 6 plys installed last week. I've only got 6 or so landings, but I like the tire. I'm running 29psi in all 3 and it feels more "positive", less tread squirm on roll out. I was amazed how whimpy and weak plied the OE tires were, there's just nothing to them. The OE tires had no cracks and the tread was worn evenly from left to right and no cupping. After talking with RL a few weeks back I decided to change out the rubber based on his recommendations. Don't read too much into it...just change 'em out. You won't be dissapointed.
Mike