Bjj Globetrotters is your friend. Give it a google.
Did you possibly do the heelhook by basically grabbing the heel and reefing at it? I know that is how I was taught heel hooks in Sambo and from old mma tapes.
The leg lock game employed by a lot of people who dabble in sub grappling isn't usually the most technical.
You may have been grappling with a recreational blue who was trying to tell you that you were attacking the heel in a way that won't work against a leg locker.
The game has changed and is very technical and you can't really get away with that anymore.
The schools in your area are ridiculous.I reckon you could train at Renzos for that price in NYC. You would be better off doing that once a week and continuing your wrestling.