I got to try Timistall's new modified 5100 today. He just got it last night UPS from Dave Neiger and I had a big job today, so he came along to break it in a lil.
He ran 2.5 tanks of fuel through it today. It was stalling at an idle occassionally until I tweaked the low mix screw, then it ran fine.
Brand new on it's first day, the Neigerized 5100 was about equal to the broken-in Power Ported Husky 346's. We expect it will get substantially stronger as it breaks in. My newest 346 took 10-12 tanks of fuel to hit it's stride. Both the Dolmar and the Huskies were running 18" bars and .325 chain. The Dolmar seems slightly bulkier than the lil Husky, but weight feels identical when holding them side by side.
As with the 346, a decomp is unneccessary. The Dolmar pulled over and started easily. My mother could start this saw without a decomp.
Tim should be on here later to give his opinions. I only tried it for 1-2 cuts.