echo 590

My new 590, barely 2-3 tanks through it (~40:1 using HP Ultra and Stabil in eth free 92 oct, fresh fuel) Even after muff mod & airbox mods, the carb didn't need adjustment for Idle or Low (hadn't set H yet, wanted to get my baseline compression benchmark, then was gonna go set H while spending...

I aim to run my saws "optimal", I rarely err towards fat/lean, however my understanding is it's smarter to run a new/out-of-box saw a bit fat (and w/ extra oil) My problem is that the carb's limiter-caps are such that, out-of-box, my carb's H&L were already both almost max'd out (fully CCW...

tl;dr -- bought a floor-model echo 590 from Home Depot, it looks/sounds great but before I put it to wood I want to both ask if there's *anything* I should be looking at/for on a 'floor model' and, since it's my first no-primer / with-compression-valve saw, am wondering if "break-in" procedure...

I have a saw that came to me in pieces, including the carburetor. It was easily put back together, but the adjustment screws had been removed. I've seen posts talking about starting anywhere from 1/4-1 1/2 turns from seated on the L screw and 1/4 to 1 on the H. I've rebuilt many carbs, but this...