IMO, there should be other garages that could carry out a clutch change on a Chim, it’s not rocket science. There is a garage in Inverurie that has done work on TVR’s for example, so maybe someone will know of one nearer to scumdee.
What's Alex Thoms up to these days - he looked after my stage 2 Cortina when I was a student. Brilliant bloke - garage was in Rosemarybank - but that is a few years ago....