Hi there, I've number these pictures 1 to 6 to match points 1 to 6.
Before anything, release the rear part of the roof.
Electric, just hold the button down a second or two until it releases the rear clamps.
Manual, I think you just use the buttons behind the drivers seat to "pop" the rear clamps.
1, Pull back the trim here on each side.
2, You see the press stud , there is one each side. Undo and free straps from behind struts, note how they are routed behind strut and side panel strap.
3, Clearer pic of 2, you can see the end of zip, feed the end through so you can do 4
4, Unzip, don't force this, it should come apart ok (tip for refitting, run a wax candle along the zip teeth to lube) the sides held in with velcro, undo
Now 3 sides should be free.
5, Lift up rear like this (if you have electric roof, turn off ignition and wait a mo so it will move)
Place a sheet under to catch any swarf/crap.
As seen under the bottom edge there are a row of torque headed bolts, most of these will probably be rusted in, I got 6 out and drilled the heads off the rest. You can get the grips on the shaft and unscrew what's left.
The two at each end hold the side panels to the rear panel, once you get these out, you'll be able to get at 6.
6, Pull side panels out slightly, there is a bolt each side down by my finger, undo.
If you have to drill the heads of these two off, you'll not get the grips on to the shaft, so drill all the way through (careful not to go into the body work underneath) with a 4.5mm drill bit, you'll get another bolt bite in with a bit of lube.
Panel now free to unhook off the bottom rail and remove.
Refit backwards of above, but..........
For bolt replacement, you need 13 in number, M5 bolts, 7 or 8mm long shafts with washers to fit.
I got a couple of bags of slot headed M5's from B&Q, they are 10mm long, so I used a Dremel to cut them down.
You do not want them to long, as they will come through into the fabric panel under the screen.
You do not want the heads sitting proud as they'll scuff paint work when the roofs clamped back down, the heads must fit fairly flush under the seal.
Be careful of the new screen, keep it flat and don't kink it when working and try not to scratch it.
See here for replacement screen, I went for the dark tint and it looks good.
MGF & TF Rear Window Replacement