Finally got some more time and parts to have a go at this again and prove to myself I’ve not just got worse and doing this sort of thing
These are the findings, the trim I had to start with was a few years old, normal thing, you loose a piece and don’t have a replacement to hand so you order some in ‘just in case’ then never loose another, as well as being older it was also coiled with the clear plastic edge on the top of the curve, so I was fighting it both ways and no amount of heating was helping.
The COH Bains trim was OK, profile is a bit off and the effect is much more of a brushed metal look, so
great if that’s what you are going for, the silver effect also carries on into the fixing lip.
I also managed to get hold of some new Minispares trim from the premium Northern branch, this is what I fitted as it’s a much brighter chrome effect, it went on perfectly with a little heating from a hairdryer is the tight spots, a really good product which I will buy again, (but won’t hold in stock for years

)