Guys,

My flying buddy has an old OPS 1.80 Glow engine in an Extra that he purchased at a swap. For the last month he's been tinkering with this engine trying to get it tuned. Unfortunately, he/we have made little progress. It sure would help knowing how to tune the low/high ends of this engine as the "trial-and-error" method isn't progressing.

He's now replaced this engine so he can fly the extra, but is looking for another airframe to put the OPS in once he gets it tuned.

Can anyone explain how to set the needles on this engine in order to properly tune?

Thank you!

-Alex