Thanks for the info on the hinges. I use 3M clear patching tape to seal the hinges (this tape is kind of thick an really strong, it is also see through) So it really acts as a cont. hinge. Has anybody else had this pitching problem. Let us know so that maybe we can find a diff. solution to it. I did calc. the cg using the standard cg formula and the 25-30% range. The range given in the manual is close to 33-40%
Happy flying.