Well, after a good amount of reading and thinking, I've decided not to dick with the shock mounts. Offering the CBR shock up and raising the top mount by 40mm would push the shock cap/mount into the airbox and make it slightly out of vertical angle alignment which might cause fouling/binding issues.
So, plan B will be instigated.
I sell Protech Shocks into the VW aircooled market and will have a one-off 2.25"ID 13 stage adjustable monoshock coil-over 'made to measure' with alloy billet endcaps and rose joints at 275mm (static length) with a suitable spring circa 350lb (tbc). The adjustable damping will be useful, but getting the static length and spring rate correct is key.
I figure 185kg bike and 90kg rider = 275kg or 600lbs. So a 55:45 ratio would need circa 350lb/6-7" coil...am I correct?
Any advice or experience of coil rates for a 185kg (dry) bike and 90kg rider would be useful please. I'll be talking to Protech to get their advice as well, so should know more of the spec next week. Coils can be swapped out relatively easily and cheaply, so no great shakes if I have to increase/decrease poundage.
I wanted to have the stock ride height if possible, unless there is an advantage to raising the rear a few mm without any detriment to the handling (despite the chunky/clunky tyres).
Oh yeah, fork gaiters arrived from Honkers and fit, yay!
Thanks for checking in chaps. HNY2016 to all