Welcome Iron Mike,
There are a few more Items to consider, Elevation & Ambient Air Temps and what heat range plug are you running, type of fuel,mix ratio, and what type of riding will you be primarily doing.
I have to thank you for doing some research and having found a 168 & 55 a good place to start,
( C rider, stock or slightly modded bike at or near sea level, trail or mx, 40:1 from 75 -80 deg I'd say .)
Not that the process isn't the same. The only difference tuning a chainsaw, R/C car and Bike are the way the circuits are controlled.
Most guys who are new to a bike or site just want to know what everyone else is using, and it appears you know there's more to it than just throwing out some numbers. (Well and be somewhat responsible about it any way.)
The Teem Green Jetting Chart has been a good place to start, like you stated, you need to do some tweaking.
Green Canon also makes another good point, where is the lean condition occurring.
The pilot will affect Starting, Idle the most.
The needle and clip position will have the most effect off idle up to 3/4
Over 3/4 your on the main, remember the circuits all overlap, or The ankle bone connected to the shin bone.
I would leave the 170 main in it right off unless you are excessively blubbering & spooge-ing.
I don't recall you stating whether or not you were experiencing any detonation or not,
or you may not recognize the symptoms. But an ashy white plug might not last long and you may be looking for a stock head, cyl, rod and crank if not corrected quickly.
Just because the plug was wet, doesn't mean it's not gonna melt down at speed....looking forward to the next exchange of info!
Tuck\o/
