Can you bend the backing plate out a bit more to ensure clearance.
I haven’t had that issue yet but my guess is everything is coming out of China these days so quality is not there anymore. Just because its stamped VW Audi and has Germany on it - doesn’t mean that’s where it came from anymore.
I have seen this with a few bay window model parts that say Germany but weren’t.
I gave up on drum brakes a few years ago and did a T4 rear disc conversion.
I’d love more details on this mod Scott - always wanted to go the T4 rear disks route but haven’t found a source of brackets or any info on which T4 years are suitable or what the fitting involves…
From what I remember the discs used were 97-99 rear discs and despite the fact I have the Lucas brand - I hear the Girling are the calipers to get.
As per other conversions, the hub needs machining, you need the adapter kit, you need to slightly alter the end of the T3 cable to work and you need at least 15" wheels for it to fit.
Actually I dont think there are many brake conversion kits which fit in under the original 14" wheels…