Madison Owners Cars

Bought my Madison kit in 1983, but never got around to getting it finished, until lockdown in 2020 when I decided it was time. Its almost ready for the first MOT, but I’ve hit a snag with the rubber windscreen seals. The originals were not in good condition so I’ve been trying to find a replacement, and I thought I’d ask if any members on here have replaced theirs, and what they used. I have tried several Claytonrite type seals but they don’t have the bending radius to get around the corners without deforming. Any advice or suggestions welcome, thank you.