Try this Magnum .61 manual since ASP and Magnum engines are pretty much the same anyway: http://media.globalhobby.com/manual/210770.PDF At the top of page #3 (at about halfway down the manual) it tells you how to reset the low speed needle to factory specs. I think this should get you in the ballpark to at least get it running again. Btw, "Speedracerntrixie" in post number 6 is spot on too.....so now you have two ways to try and get that booger running again!