Had the bike a couple of months now. Changed the rear shock for a bespoke item from NITRON, amazing transformation. Wouldn't have believed it if I hadn't experienced it first hand. Also removed the cat for a straight through pipe. The bike now rides like a flymo as well as sounds like one!
I think it's marketed as the sport model which does have preload on an adjustable collar, not on a separate remote cylinder. The decided to deal directly with Nitron rather than a third party reseller, there service and turnaround time was excellent.