XRAY - Model racing cars

Ok guys, I'm new to this forum and I just finished engine brake in on my XB8 2016. I'm running the Novarossi Mito 7. I currently have the 7mm venturi in it. I've been trying to get the engine to race tune but I'm still running the factory glow plug which is a mid rage plug. Should I run a colder plug to continue the leaning process.

Hello

Sorry but this forum for XRAY/FX. You asking for Novarossi help. You should contact Novarossi support.
But because we would like to keep you happy with Xray car and maybe future FX customer i will try to help you.

Normally with engine they supply glow plug witch work at every condition. Plug from Novarossi should be C6TGC