I've read all the archives and cannot find anything on this. I
bought the 5 piece OER kit (I believe the header and sides are made by Metro and Soffseal, respectively)and I'm having trouble with the header
piece. If I slide the front side rail pieces far enough forward to
seal against the pillar post seal, the corners under the header bow
are too far forward to seal against the header. The reproduction
pieces appear to be less substantial in this area and elongated between the corner and the side part that seals against the vent window top.

I am very confident that my top frame is adjusted correctly and I'm
getting a great seal everywhere else. It's just these corners. Can
anyone help???

John