Sthil has a new bar out that just blew my mind. They are much lighter in weight by pounds. One of my past students came by a few days ago and had a 32" on his 460
Can you try to find the name of that bar? Is it a professional logging bar?
We use mostly Duramatic and some Rollomatic. We are having problems with Rollomatic as the roller on the tip often get packed with sawdust mixed with oil. The tip gets really overheated. The overheating is something we experience normally on the smaller bars (22 - 25 inches). The larges 59 inch bar is not overheating as the smaller ones.
The overheating happened when we were sawmilling, mounted on the Logosol Big Mill LSG. The chainsaw ran for 30 minutes cutting boards.
When we changed the smaller bars to Duramatic the problem went away.