Hey andy, I know all about the ______ working my way through ________ myself and scouring eBay and watching family guy on fx. The boy is asleep and my wife is on a Christmas party. Life is sweet.
I just sprayed some meths into my old pipe after drilling and shook it about. I blew the air hose through it too.
The picco carb is perfect, I have never changed it but when I used to run a piece of crap rb engine which struggled with carb alignment I opted for a ball raced bell crank,blue anodised to match too. I think there are some on eBay usually.