Have you tried pulling off the petcock/filter and looked at it to see how clean it looks?
He shouldn't have to, if there was a question the mechanic should have done it and reported it to him.
And just a clarification - I'm not upset that Engraverwilliam didn't send the carbs to me, that's not it at all. What I really don't like is when someone proclaims a vehicle a "lemon" because he had a mechanic who was a lemon. The c-10's, like I said in my intro video, are about as bulletproof as a mechanical contraption can get. 2 things kill them - hydrolocks and crashes. We can easily control one of those things. Steve