Gwmagee - I can certainly understand why you are upset. For some reason, I still believe the issue lies with your builder.
To your point, I find it hard to believe that the builder would completely assemble the trike :before it is painted". Like you said, that takes and would cost a double build price.
Still think you should get on the phone with CSC and let them know what happened. This is exactly what I did when I have the problems. When my bike was delivered, it did not run properly - the clutch was not adjusted correctly. I got on the phone with both CSC ad the builder - there response was, take it to the dealer and do whatever is needed.
Installed picked it up on a Sunday, took it to the dealer. Dealer installed a completely new clutch. I paid the bill, sent them the receipt and got a check withing a few days. Since then, I have not had any issues at all.
My wheels were not available when I ordered. So, they put wheels on and said when they arrived, they would ship them to me. Got my new wheels the other day and they are installed.
Your call - however, I still think toy should contact CSC.
By the way, the bike looks like your color. I was talking to this guy before I had mine done. I believe CSC painted his.