In experimenting with some SI Cartos i had used for a while.. I found I get better performance if I back out the carto contact about 1/16 of a turn. I hadn't been tightening them too tight, but maybe the repeated counter-rotation of screwing the cartos onto the cigs (65mm) has driven them in a bit, requiring adjustment. I tried this on two carts tonight, and they hit hard now with a nice easy draw.
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