As to those Enya glow plugs, there are none better in an Enya. My 14 year old .46MKII still has the original in it. And that is after three years operation using Fox 15% nitro fuel with 20% castor, several years on Byrons and finally WildCat Premium. Here it is waiting to be mounted on a US Aircore Colt 40. It will be the third USAC plane it has been on.

Dr. B, is your .53 the TN version. Also, were your timing gears rusty, I took mine down to inspect things about a year ago and the were really rusty. I now remove one of the carb bracket mounting bolts and inject Corrosion X between uses. The rust is almost gone as Corrosion X removes it over time as long as it's just surface rust.