Well, thread x here but,
first thing is to remove slider cover,
then hang a tape measure over the gutter at front and again rear of cover holder

...

you will now have half the critical information you need, take a picky as its more honest than writing it down.
you could have taken these picks to show the start and finish of the holding groove as this will become obvious later.
next you will need to drill 2 x 6mm clearance holes right through the runner to the inside of the van, if you look you will see 2 separate deformations of the inner wing, do one in each as far apart as is practical.
Also try not to drill these 2 holes through a spot weld,
so far the above applies to factory glass or van or van conversion and its also same for early and late doors
next locate the spots , wipe area cleanish with thinners or whatever you have, no thinners then nick your better halves nail varnish remover , or your own if thats your leaning, then a light rub with some old sandpaper then drill through the spots with an 8 mm bit , do not use a spot remover ,
next cut off the rotten inner panel as shown, yes you can cut less off it depends on damage but if youve gone this far then do it all , late vans are a little different at the front end so you will make your own decision here as ive not bothered to take picks of the last few i done
Oh and the slider runner comes away with the panal itself as when you did the 8mm holes it was as much to detatch the panal from the inner wing , my pick make sense i hope
so clean up all the rust etc and remove the runner and clean /blast ,do what you will,
and then cut the new backing panal to fit as in picks way up the thread.... the clever little channel for the cover is from schofields or jk, there may be others but........................
if you l;ook

and

you will see where to fit this, now the reason i said to measure start and finish is that this strip is longer than needed and you need to cut it so that you have a weldable tab left at each end
at this stage you do NOT weld the runner to this assembly
now im holping you have the window removed so that you can use long grips to secure this all in place, now refer to the picks you took and set this panal so the measurement look like the picky and no cheating . ok were not to a millimeter and having it a toutch too low is ok but to high and you will have bother.
when ypour 100% happy you now drill from the INSIDE through the 6mm clearannce holes. then you bolt the runner through and you are now 100% back in the same place , see easy, then weld it up as you se fit, i joddle both the upper join and the lower. it adds rigidity and makes a neater metal metal finish.
that took some describing , almost quicker to do it
hope it helps
mm
