look on amazon for the paper stuff and yepp the kgd will work but i tear the pad in half and prewet it with some vg so itll get down in thier easier after its wrapped around the coil.also i put the torn part towards the coil when i do it...opps sorry been a while for me doin the BDC aspire heads.
havent done the bvc yet.did do the
nautilus bvc's though.and them are pretty tuff to do.i reuse the factory coil and tear the old cotton out.they ended up hittin good for mtl vaper and for flavor it was great.
try reusing the factory coil from the bvc heads KAS.i put a tiny drillbit through them and burn the crud off.then clean with a pipe cleaner just cleaning off the burnt stuff while the drillbits still in the coil.hope this helps ya some.the
nautilus and bvc aspire heads are similar so the
nautilus way will work with the bvc aspire also.