Ok, here we go, for Eric or whomever may be able to lend an ear. I have a 61" chariot with the ever so great 25 command. This year we put doubles on, the regular high lift marbanes on the bottom and the gators on the top. This seems to be a common set up so i figured give it a shot. Well they seem to work well but like today i did a couple larger lawns that were higher than normal, not rediculously high but high nevertheless. Now i figure with just singles it would have had no probs cutting, but with the doubles after about 10 feet it sounded like my belts would start to slip. They start to screech a little, and the notorious helicopter suction sound is greatly decreased hence the slower blade rpm. So i went to the truck and tightened the spindle belt a little figuring that was the p[roblem, no good. I think its the belt that goes from the motor to the deck, the drive belt that may be slipping. Anyway is it just too much? The high grass and the high lifts with the gators? Or is it maybe an adjustment? I have never had doubles on before so im not sure what to expect. The motor doesnt bog at all just the slippage and slower blade rpm, if i stop for a second or two sometimes it doesnt even pick speed back up till i move to antother area, then it picks speed back up, and this area still has high grass yet it picks up blade speed.........im confused. The machine has 30 hours on it so i cant imagine it being an adjustment but yu never know.......any ideas fellers????