RPM Airgap vs. non-Airgap?

On another note:
Your outside garage setup pisses my off everytime I see that pic -LOL
I've had the forced air heater in my garage going for a month already and its only early Nov. - I can't wait until January!!
Like I told Old Vart, come South, come South! It's after thanks giving and I'll be under the car tomorrow (Sunday) to do a tranny pan gasket.
Ahhhh, New York New York, so nice they named it twice.