Personally, I would remove both seats and the steering wheel. It's not a nice job but improving access helps! Whilst its out I'd take a look at all of the ducting and repair with fibre glass where necessary, check all levers, valves, bulbs and repair as necessary and make sure you have a supply of sticky-backed felt and sponge tapes for re-assembly. I'm in the habit of taking photographs of everything as I disassemble it because I can't rely on the grey matter as much as I used to!