Opjose,
Thanks for your input on the flight characteristics. I did however find that my elevator halves were a few millimeters off at full throw (on high rates) not sure how much of that was the cause of my problem, or if it had anything to do with the rolling out at all. I'm confused about how my wings would have stalled out at the top of the loop even though I still had plenty of power and forward motion. (not doubting you, just trying to figure this out). You also mentioned engine torque, and that leaves me wondering if I should cut way back on the throttle at the top of the loop ( which I should probaby do anyway so I don't end up with an ultimate monoplane). Now that I have fixed my elevator halves, I will give it a test flight tomorrow and see if I still get the roll out. I'm also curious to see if the roll is the same way each time.
Thanks for the help, and If anyone else has anymore advise I would really appreciate it.