Similary story. Starting primary, I kept putting pedal into my turns. After about 5 minutes, the IP said, "You are a fixed wing pilot". Got on the ground, he said, "Let me see your ticket".
He just kind of laughed when he saw comm/multi/inst. Needless to stay, it still took me 10 hours to hover the darn thing.
Instruments came around. I told myself I wanted to learn the Army way. The new IP said, "you seem to get this pretty well, do you have some experience?" Crap, he found me out.
It really wasn't a source for problems. I had great IP's in flight school. They still taught me as if I had no flight experience (which is how I wanted it anyway)