The problem of rusting Cali 3 mudguards came up in conversation on one of the facebook pages and I was wondering if anyone knows what happened to the moulds GTM had made for the GRP mudguards?
No idea about the above.
I took my rusty front one to work, shot blasted it, revealing how bad it really was. I had previously wire brushed and “rust treated” it 
Rust soon returned, the shot blasting process revealed how bad it really was, lots of holes appeared. Light coat of primer, when removed for the blaster. Then I fibreglassed the underside.
Previously I had gone to B & Q, and had the cream paint colour matched. not perfect when brush painted, but, better than it was.