With the spruce do you notice pitch buildup in the gullets? I have two guys I sharpen for and they both run the Turner mills with the tires. They don't run lube and are usually okay but when sawing out larch they get bad gullet buildup. They're using 7/8" pitch Lenox blades and I always set them at .030 and they leave the sharpener at whatever one medium hard pass will take off on the Cats Claw. I've never measured after, but I'm guessing it probably goes down to around .027 or so.
Would a 3/4" pitch blade be more or less susceptible to pitch buildup than a 7/8" pitch blade?
Them are some might fine looking logs there, jake!