I have asked this before and got no replies, but a customer is complaining his 400 KQ is using too much fuel because he is revving hard and going slow, which is a characteristic of the LTA400. Does anyone make either heavier rollers, or a lighter spring for the driven pulleys, to raise the gear to revs ratio on the Eiger and 400 King Quads? Here in the UK there is little in the way of modified parts, but the 400 has been made in large numbers and I believe there are lots of variator "modifiers" in the States so, have any of them produced parts for the LTA 400?