Chin Rest Fitting
I bought a new chinrest (needed something taller for my long neck).
The new CR doesn't sit flat on the violin (it's interfering with the shoulder?). Is the best method to cut away the cork and use a file/sandpaper on the chinrest?
you should be able to file or sand the cork without removing it, the differential is less than the thickness of the cork, and the cork can be quite a bit thinner and still work fine IMHO or do you mean its bumping into the saddle??
Following up on Lyndon's comment, to me the photos look like the CR is bumping into the saddle. If that's the case then you have to cut away a bit of the cork with a razor blade and then grind or file away the inner corners of the CR. The fact that the hardware is so close to the corner of the CR is not in your favor. If you remove the cork entirely you can replace it with new cork or leather (chamois).
titanium hardware isnt going to change anything but your budget, you need to make the underside of the chinrest a better fit to the surface of the violin, if it touching the saddle just cut the part away with a very sharp knife or a file, no need to replace or remove the cork
Judging by the photo, you will definitely need to file the wood as well.
I agree that titanium hardware is not essential, and you might not need new hardware at all, depending how much of the CR you need to cut away. The CR needs to be able to take some stress -- it can't be fragile. I agree that a knife is likely a good tool for this job.
Several years ago I replaced the cork on all my chinrests with "self-sticK" rubber sheeting (actually rubber tape), cut to the cork dimensions. This would give a better fit, but my reason for doing it was to acoustically isolate the chinrests from the instruments - it worked for that too - and I got better sound.
Thanks Lyndon, Paul, Adrian. Yeah, it was bumping into the saddle. I did as you all suggested, and used a razor blade and carved away a bit of the wood. Not much was needed!