The adjustment on the low end needle was the fix on my 3W85,did the same thing inverted until the low end was leaned out.
I have the new 106 bob-nj and it is a POWERHOUSE !!! It runs great in any attitude and pulls the Hangar 9 Sukhoi I have it in with no problem. No loss of rpm's or speed on the uplines and you definately have to throttle back on the downlines.It runs very well and very smooth,I can't wait until it breaks in and I get used to the plane,great combination !
I have personally talked to a couple of guys who have both the new 106 and the old 120 and have compared the 106 in power to the larger 120, I don't have an old 100 or 120 for that matter so I can't comment personally on that but the 106 I do have has alot of bang for the buck !