Last I downloaded one, I have to find out the best way to set it up but I know how to inovate so that will become OK.
http://www.tavia.com/free_degree_wheel.html

Problem with a degree wheel is that there are still some factors in which you can not directly say how far you can go, that is a bit of trial and error. Thats why you 1st have to go no further than lets say 0.4mm and then you can try to take off 0.1mm in steps to give it a try on the track. If you go over the limit the engine will be critical to adjust on the low speed needle. So far I did see some tenths of a mm is more than enough to gain enough performance, the price of most racing engines is not worth to find the limits because there is no way back.....