My car also leaks a lot! So I am quite interested in this topic! I made some 4mm neoprene pieces to the A pillar. I hope, this helps a little bit!
What i still don´t get (sorry for that), is how you apply this neoprene to the header rail. Do you use a 2 x 2mm self adhesive neoprene roll? I think it has to be glued in some way I think?
It depends on the spec of your header rail. Later rails have two lip seals on the front and rear face. The neoprene profile will slot inside the lip without using glue. Avoid glue on the seal!
