Hi Frank, the valves were adjusted a couple of weeks ago. They should be just about correct. The timing is at 13 with the vacuum line, around 10 without. The flywheel marker isnt super-steady and moves around a little. I also put in a new exhaust cam, thinking that one of the lobes might be flat. The engine has also had new exhaust valves and guides. What makes its strange is that it'll idle smoothly, then abruptly become uneven with the air meter flutter and higher revs I describe...