Capri Trunk/Boot Alignment

Ever since I have restored my green Deluxe, I have never really been happy with the boot alignment, especially where it curves over at the end of the boot lid. The left side seemed to be slightly higher than the right but both were 3-4mm above the body of the car. I have tried numerous time to adjust it by using the points where the hinges attach to the boot (mainly for moving back & forward) and where the hinges attach to the body (for height).
The rubber boot seal seemed to be too high on the back curve & that prompted me to try the seal from my white XL as the boot sits really well on that car.
Using that seal, the boot on the green one fits much better so at a recent car show I bought a new rubber seal (suitable for Capris & Escorts), thinking that would solve the problem. I even took the old one to ensure we got a better fit.
However, after fitting the new rubber, which was supposedly not quite as high, the boot did still not align as I would have liked.


These are the before & after shots and show how the LHS just sits a little too high.
After another attempt with the old rubber from the white Capri & adjusting the hinges at both places & shifting the latch plate, it seems reasonably good - not exactly as I would like it but as good as I seem to be able to get it.
I then fitted the new rubber seal to my white car & guess what? The boot won't shut! So, I have one with a good fit & the other car with no fit at all. I am going to see if I can get a very low rubber seal as that appears to be the major problem.
I would appreciate any ideas if you have had similar problems.