I'll try to see if I can get any effects from the small pre-melting inhale you're speaking of, although I suspect that I won't.

A good method I've come to, however, seems to be holding in the battery for 2 seconds, releasing for 1. I just keep doing this until I feel like I've got a good deal of vapour in my lungs. It seems to work really well and eliminates most burning of the DMT, which my throat is definitely pleased about.

I'll also keep experimenting.