I recently got back into RC Planes and bought a Avistar ARF for a Trainer. Per instructions I put Epoxy in the cut out for the Horizontal Stablizer. After letting the epoxy cure I remeasured from the middle of the firewall to the tip on the horizontal stablizer. I came to find out that I am off 1/2". If I measure the right side it measures 36 1/2" if I then measure the left it measures an even 37". For whatever reason during the curing the horizontal stab must have shifted. My question is how much will this effect flight performance?? I am so pissed at myself, I can't even assemble and ARF right. any input would be greatly appreciated. Thanks.