Bob
I got a used Enya 45CX and it was all out of whack, tuning wise and I set the air bleed srew about 1/2 way across the opening for a starting point. I think I remember turning it in about 1/8th turn and it idles low forever, accepts full throttle as fast as a two stroker can and settles down nicely. I use 10% CoolPower, OS #8 plug, and MAS 11 x 6 and it sreams. Some have said to use 10 x 6 becuase Enyas like to run at high RPM's but I find mine runs great at all settings.

Hope this helps. I was about to toss mine in the junk but after spending several hours troubleshooting it is a great engine that should provide years of entertainment!

Scotty