I'm flying a 4 channel with what I'd describe as an "average" dihedral. Barrel rolls seem hard, when the plane rolls, it drops altitude like crazy. In experimenting, the only way I've found to even get through the roll is to give it some down elevator. A left roll, for example, gets ailerons at 10 o'clock. I still lose considerable altitude by the end of the roll. I've even moved the aileron throw to give me maximum response. Am I doing this right? Is it just the dihedral that's fighting me, or am I missing something?