On another note..... If you have a kinda high compression conversion...it may be more easy to use strait alcohol fuel, with no nitro. Like a Moki glow engine. With gasoline getting high priced, I do think you will save $$ if you mix your own fuel. All you will need is some Klotz oil and alcohol. Thats what I am ging to try. Gas will leave more carbon in you engine also...over achohol fuel. Just my opinion. Capt,n