I'm inclined to agree with Ray. Having the shutter cleaned professionally won't cost a fortune, and I very much like the line, 'If it's worth buying, it's worth servicing' (consider it stolen, Ray!)
Admittedly I've occasionally bought cameras that weren't worth servicing, simply because they're pretty or because I can turn a profit on them, so I'd modify Ray's statement slightly to, 'If it's worth using, it's worth servicing (or at least repairing)'.
I'd not ask for a full CLA, because a good repairer will do some mucking out anyway, but if the rest of the camera works OK and he hasn't got to strip it (eg wind-on mechanism, film counter) the repair will be significantly cheaper.
Although I've done the lighter fuel/trike clean bit, I normally only do it with LF shutters (no camera to strip) or cheapo cameras that aren't really worth using anyway, but might be amusing.
Cheers,
R.