I can fly again but so far have not...

I pulled the KK pressure back-plate off and held it up to the light and it looks clear to me. Just to confirm, passed a toothbrush bristle through the crankcase side until I could see it come out the end of the nipple. Just now tried blowing air into supply line of tank and pinching off while sealing pressure line and counted to 30 - could hear air rush out when released. Not saying the tank's good, just what I've observed so far...

I went so far as to create a crude insert by turning down a piece of 1/8" ID aluminum tubing for a tight fit in the venturi and followed through with drill for the three fuel delivery holes. The venturi now has a step because of this mod. I don't know what's changed so I may be going nowhere here but I'll try it. Edit: Actually, from memory, something has changed: I am using stock rubber ducky 5X4 props vs cut down MA and Cox comp props and 30% heli Nitro vs 25%.

Is it possible I opened it up way, way, way too much? A 5/32" bit used to pass through with slop; an 11/64" bit was no-go. Now, with the insert, an 1/8" bit passes through with slop; a 9/64" bit does not.

Hate to ruin a new glowhead with a lean run but will give it a try.