Thanks Matt. Yes, auto clamping model. The slide was at zero. but there's a heck of a difference between l&r rakers. I was trying to grind them to get a 6.5 degree angle from cutter tip to raker. Got it on one side but the other side was just a tad over 5 degrees even though cutter lengths were even. I'm thinking maybe zero on the slider isn't actually corresponding with a perfectly centred chain when clamped?
Also, there's something funky, some oscillation happening in wheel or head somewhere. It's only slight but it's a slow pulsing as if there's play somewhere. Hope i haven't got an expensive lemon. Hope it's just a learning curve to master and then all's good.
I recall emailing Greg ages ago but to be honest, I can't justify those prices, as much as I would like to use those wheels.
Tried the E&E site but it's down at the mo so will check it out later on.