The bolt actually cycles lovely and smooth, not having any bolt binding issues at all.
The only time it was playing up was on the first cartridge of a full magazine, as it would grab the cartridge off the feed ramp push it half out of the magazine then it would bind up and jam.
If anyone else is having that issue the cause was a magazine issue, a mix of sharp unpolished feed lips and too much spring pressure causing the magazine lips to bite into the brass case and latch on and jam the action. This would occur on the full magazine as that is when spring pressure on the cartridge is highest.
To resolve this I pulled the magazine apart, they are user serviceable. I bent two of the spring coils past their spring point to reset them with less tension. Have to be careful not to take too much pressure out or the magazine will not reassemble properly.
I also polished the feed lips with 400, 800 and 1200 grit wet-dry. A touch of oil was used on the 1200 and made sure to remove all oil and metal dust residue when done.
I put a thin film of gun grease, as in a really tiny bit on my finger and wiped it on the feed lips of the mag then off again with a patch.
Feeds great now, the action still needs to be run with authority like all Mauser based guns, much happier with it. Hopefully that resolves it for good.