I fly Futaba, but I don't think 100 or 150 should matter. The learn process is teaching the ecu the % or atv value that it should expect for full or idle, etc... So if you teach it that full is 100% with full up-trim, then the ECU should use that for full. Does the GSU show full throttle position while it is running at 50k? If you let it run, does it shut-down or remain running at 50k?