Cheers Rowland, have got a few ideas with the cooling if the ducting isn't going to be workable. The main backup plan is using a non-conductive material which is great thermal transfere such as this
http://www.pccasegear.com/index.php?...ducts_id=19703 to pack the rear of the sensor and turn the shim into heat transfere surface
I've used this stuff quite alot on pc vga cards for power mosfets, though i wouldn't mind hunting around for the very best.
This camera will never be used again for normal use, which lets me sort of goto town modding it lol. I'am even planing to lose the lcd&mic and any un-needed parts, I may even fully re-house to make life easier. I'll see how things go, just getting all the prep work done atm with screw sheet and getting screws drivers ordered ect