Hi Max.
I usually refuse to even look at them these days but I felt a bit sorry for this bloke because he got 4 of them from Market place. I got one running for him and I will put a new carby on this one but as you say pointless wasting time on them. Mower shops charging $120 for a service, I bet they didn't get too many people prepared to get them fixed, but I understand why they would need to charge that sort of money