Generally, trainers have positive incidence in the wings. This is so you can climb with increased throttle settings. If you want to gain altitude you add power or vice versa. I personally do not like that but to each their own. Adding 1\8" at a time is a good idea. I know there are variables here but 1\8" will be close to 1 degree. It would be nice to see some pics of this modified Telemaster. Good luck.