That's what they tend to do yes...RR will do that to you. I did a tune for the RUF YB in 2.08 so try it if you like. Dunno how it will work on 2.09. You can also try any of Praiano's RUF tunes - they're all easy to drive.
I thought it was just there nature too but when I saw someone who beat quote a skilled crowd with a RUF BTR '86, I was left puzzled thinking I got 99% and I don't how to deal with this?
I will try his tunes