Seat Removal

Front screws clearly visible with the seat pushed fully back, but unfortunately covered by the frame just enough to prevent a socket and ratchet (either directly, via a 1/4" drive or wobble extension) on the hex head. This means using a 7/16" ratchet ring spanner, or if you don't have one of those a laborious task with an open-ended::

However there is a stop block at the rear of each of Bee's and Vee's outboard runners which stops the seat going back as far as it might:

With an 11/32" socket on my 'door spindle socket driver' the locknut can be slackened, then a 9/16" spanner can be used on the square block to unscrew it (easier than moving the socket on the nut):

That allows the seat to go back further to get a socket on the front screws:

With the wider Mk2 tunnel the seat cannot move forwards far enough to get clear access to the rear screws, but with the fronts out the front of the seat can move sideways and be pushed further forward:

Runner kit and slats from Moss Europe. Three holes in the floor runners but only two in the slats - the inner pair in the slats are for the MGB, which together allow the seat to be bolted down in one of two positions and give two ranges of fore and aft sliding adjustment. The holes in these slats are offset so it can be reversed to keep it all under the floor runners to suit whichever holes in that are being used. There was only a single hole at one end of the slats I bought in 1990/91, I had to cut the extra ones to fit the screw spacing, and they are longer than the floor runners whereas they should be the same length:

Note the above floor runners have adjuster holes at both ends of both floor runners, so there is only one runner and it fits either side of either seat. Original floor runners did not have adjuster holes at the rear so there was a left and a right for each seat, with stop-block holes at the rear of both runners but only the outer one is fitted. I see no reason why the rear-most square hole in current floor runners could not be used for the stop-block, if desired:

Spacer thickness is 0.34", slat thickness is 0.21". The spacer diameter is 0.733" and the slat width is 1.18":