Nope. I use the whole thickness. I have found that different J-Cotton Pads (KGD, Muji, Puffs and such) have a different thickness, so I might adjust my width depending. I haven't gone all the way up to 40, 50, 60, 70 Watts with my method as I don't vape that high of a wattage, and sometimes I will fan out the tails or leave them straight, you know. On my Lemo's I fan them out and just lay them on the deck not blocking the juice holes, on my Cthulhu V2 I leave them straight and put the front half down in back of the wick ring cut to the bottom of the ring and the back half cut to just lay on the deck (like on my Lemo's), two different lengths of the same wick tail. I find that if I go any less than 5mm (like you) on a 3mm coil then I start tasting Hot Coil taste (not burnt taste), and if I go beyond 10mm in width I start getting Dry Hits (too much cotton clogging up the juice flow), so I have settled on 7-8mm in width for 3mm ID coils (that's with Double Twisted 30g Kanthal A-1 and Quad Twisted 32g Kanthal A-1) for the way I vape on my single coil deck, good for 13-25 watts (25 watts chain vaping 3 or 4 hits works good with wide open air flow as does 13-16 watts for tight MTL and really tight air flow). I'm gett'in there I think with my wicking.
I might have to try a bit more to see if it does anything for me.
