Here is something else we ran into. After having trouble building RPM and having a very rough running engine that seemed to want to run very lean, and ran relatively well at idle, but not at WOT. We tested the fuel flow from the injectors and found the below. Very uneven flow. After removing the nozzles the flow was healthy and balanced. We cleaned the injectors with an ultrasonic jewelry cleaner and with Hoppe’s Elite gun cleaner. After that I still had to blow air from my compressor back through them to get all of the debris out. We then cleaned up the spark plugs with a propane torch per a recommendation from Klaus at Light Speed and now everything seems to be in order.