I replaced the autofeed with a brand new LOR and it still does that. I think it’s a loss of hydraulic pressure when the engine bogs down so the feed wheel can’t reverse the drum sucking the wood in.
I have some gripes with the TR but all and all I think it’s a step up from my onyx and the ability to change the center of gravity for the bridge on the fly is fantastic.
My favorite bounce was when the homeowner didn’t have their leave cleaned up and we were working in four inches of oak leaves.
I took a five foot section of spar out when it hit the ground there was a rock under the leaves. It bounced and slammed the house. Had to fix that one.