I did not correctly prime my OCC coil heads, so I burnt the 2 OCC coils which came in my Subox Kit on day one. I have only been using the RBA deck. I was contemplating on buying some OCC heads; however, they are too expensive.I wasn't into coil building after 3 wks, but it didn't take *too* long... somewhere between 2 and 3 months, I think, because I got fed up to the teeth with the constant cost of replacement coils. And the little "starter" tanks that were available in early 2014 just didn't work very well for me -- but once I got a kayfun... ahhhhhhhhhhhh!
Andria