Please Help! I can not make my YS 110 on 15% fuel, APC 17X4 idle below 3,900. I bought it used on a Mayhem, which had a Hyde softmont. It idled around 3k - fast but manageable. I moved the whole setup to a new PA Laser, same fuel and prop. It ran like it did on the Mayhem but I did not like the excessive wobbles at idle so I changed to a solid mount. The idle now is around 4,000 and the plane can not be taxied in after landing.

I burned 2.5 tanks of fuel and adjusted the valve and both needles to no avail. The HS appears to make the most significant change when tweaked. The LS is turned in all the way (richest setting). The valve screw is flush with the body. Valve screw 5 turns out or bottomed out made little difference.

With 1/2 tank left I decided to fly the Laser. The accelleration and top end are incredibly good. I made two perfect landings but could not taxi it back so I took off again and again. I flew until it ran out of fuel and deadsticked it in the grass. Bent the gear but no other damage.