Hi Richard,
Have you had any luck with finding replacement drums? If not we can help with the re-skimming if you’ve not already had James do the work.
A couple of other considerations though, if you are experiencing juddering this could be a result of the silent blocs on the front not being in a suitable condition. This would be worth investigating also as it might not be the brakes that are causing this issue…
Another item worth looking into would be an upgrade to the brake shoes to a ‘floating brake shoe arrangement’ these can increase the performance of the brakes significantly, if you’re interested I can send across more details, just let me know.
https://www.yellowboxengineering.co.uk/floating-brake-shoe-upgrade
Good luck with your repair!
Robert ?