[ttaunton]

Thanks for replying! Starting with the hood fully up, start to drop the hood. For some time the piece of wood remains level, indicating equal L and R. As the process continues...a slight tilt on the piece of wood which gets much worse as the hood drops.(second picture) Then the LHS reaches its limit correctly, leaving the RHS about 2" in the air. Basically the L and R don't track together. Horizontal track slider was correctly at the end on LHS and about 8cm or more short on the RHS. So I then backed the system up a bit so the LHS was not quite on its end stop, took out the RH Bowden cable and rotated it (long way!) until the sliders were exactly matched L and R. Piece of wood also went level. Put Bowden cable back in and then motored the roof over it's full range; from fully up to fully down, several times. Perfect! Piece of wood level over full range. I would imagine that the RH Gearbox reference mark, if I took it all apart and had a look would be a long way out compared to LH. Both sides, without the camshell fitted, now bottom out perfectly at their limit, hard against the stops. With the Clamshell back on though, the hood doesn't compress down fully on the RHS, by about 1/4", but can be flexed down by hand. Could be lack of torque due to Bowden cable twisting, not compressing the hood enough, or hood not folding fully and a bit scrunched up on this side. Difficult to tell!