Hello there, I had a similar problem with my Te 510. Had to rev the hell out of it to keep it running or it would stall. On further inspection I found that the decompression lever was slightly on when the handle bars were turn to the left. Problem rectified all good now
Denatured alcohol, also called methylated spirits or spiritus, is ethanol that has additives to make it poisonous, extremely bad tasting, foul smelling or nauseating, to discourage recreational consumption. In some cases it is also dyed. So you add ethanol?