I have a new plane that I am working on trimming out and would like to ask for some advice. I have a GP Cap 232 with a DA50 that I have been putting some time into trimming out. Most times this plane only sees 50% throttle or less as it came out at 13 pounds 9 ounces. I have not had many oportunities at calm day flights to be 100% sure of all the trims and thrust angles, but I have started to make some adjustments. The plane appears to be drawing nice verticle lines, flies inverted with nothing but a thought of down elevator and holds great 45's even with a half roll. I know Caps will have more reaction to rudder input than most Extra designs (this is my first Cap in 22 years of flying). What I have noticed is that I have mixed in 20% up elevator to the rudder in both directions to start to correct for a serious belly pitch in knife edge. This number is close as I can "fly through" the rest of the corrections for now.
What I am wondering is if I may have missed another issue to this point that I should go back and correct before moving forward with program changes. I am an automotive technician that specializes in diagnostics and I like to use sound methods to approach problems. I have been able to trim out most planes with little trouble. Please understand that this plane flies very well. I just want to be sure I am taking the correct steps to optimize this airframe. I plan on flying some basic with it next year to get a taste and see if I get hooked again. 
I am more used to the Extra platforms. Any thoughts are appreciated and thanks in advance.