Not sure, this may help someone. I was getting 2 to 3 days out of my OCC coils which was 5 or 6 fill ups in my mini. After some half hearted attempts to rewick the OCC coils with KGD I managed to stuff a piece of 3mm Ready X Wick into one. The real trick I believe was not going until the coil was totally clogged, once the flavor started to change I yanked it out. I was able to pull the wick out without disturbing the coil at all then I pulsed it, put a drop of water on it with a syringe and pulse it again, looked good as new. The 3mm RxW threaded right through and I clipped it with a bit extra on each side just like you would with KGD and poked it all into the coil. It ran for a week, the first tank is a little dull but after that it tastes like it should. Can't beat doubling the time between coil changes.
I didn't try this because I switched over to REO's this weekend. I should be able to pulse the coil again and put another drop of water on it to clean it and then wash out RxW with water and it continue on once it drys. This is what I'm reading people are doing in the RxW thread in the REO section. Unlike REO's temp control mods shouldn't be wash in the sink, but with a little care and some heat it sounds like the Subtank coils wicked with RxW could be cleaned and reused.