Hey dude,
Warming your naphtha is definitely a good idea to increase yields but you need to do it carefully.
Never directly heat it or have flames near it.
The way my friend does it is like this: Boil a pan full of water. Put the naphtha in a pyrex measuring jug, put it in the pan. Leave it for about 15 mins.
My friend likes to put a towel around the space between the edge of the pyrex jug and the edge of the pan to keep the heat trapped in there.
Hope that's what you were looking for,
MZ
"Language is a cracked kettle on which we beat out tunes for bears to dance to, while all the time we long to move the stars to pity." - Flaubert
I do not engage in or condone illegal activities. Most of what I write is on behalf of people I've bumped into, usually several years ago and in countries where the things I mention are legal.