slipstream 80" chipmunk
 

HI ... I was wondering were the best balance point is on the plane. I am using a DLE 35 ra and upon flying it it has trimmed out with quite abit down trim, like a 1/4 " down or more.
Has anyone experienced this? If so, how much weight did you have to add. I know the manual said the balance point is supposed to be on the main spar. The manual also said that the distance from the back of the firewall to the back of the spinner plate is supposed to be 7 3/4" but my cowl isn't long enough for that. I'm already using the stock standoffs plus 3/4" extensions.