Hi I have the basic Extech going on 3/4 of a gallon. Just a few thought.

Its very fast runs at low temps and consistent.

I have had a problem of blowing plugs. I started with a p3 for breakin and it lasted 2 tanks. I went to a p4 and finished the breakin and installed a new p3, it lasted 1 tank. Chad said my lsn was to lean i tried to set the carb to the settings in the instructions, not going to happen way off on the lsn. I set is so rich it would barely run and slowly leaned the lsn from there. I installed a p3 and four and they only lasted a few tanks. the coil becomes distorted. I am running plat. 30%. I finally went to a p7 and so far five tanks and its running great. I get about 8.5 minutes of runtime and temps are around 195 and i have really good power. I am running a jammin p4 pipe. I am in the process of purchasing a 2013.

How much leakage is acceptable from the front bearing?

Is there a replacement part number for the front bearing?(maybe a ceramic one?)

Thanks guys