I have to say you're a braver man then I Martin to ride it home, even if only a few miles. Every bike I buy has at least one thing making it dangerous. You're all bored with the little Yam - although I think I'm getting there with that - but the Bouzouki had a throttle cable so frayed it wouldn't return and a clutch cable that needed a gorilla's strength to operate. Weirdly someone had fitted one of those "effort reducers" to it. Making the correct cable with a liner reduced the effort to manageable.
The bloke I bought it off had done 6,000 miles in the last couple of years, borne out by MoTs. Some folk just have no mechanical sympathy, although I'm sure in our younger days we've all ridden things we shouldn't. But this chap was into his 60s at least......