defrag4 wrote on 12/31/69 at 16:00:06:the marks are definetly there and you can feel em, however i tried my best to clean it with some carb cleaner. same problem.
i guess i can try to watch it with the filter off as reelthing suggested.
Just feeling the grooves doesn't mean they are a problem. I know that mine has a couple scratches too.
I'd be taking a closer look at the rubber diaphragm (sp, it's early). Was it correctly sealing the top of the carb.
AND...How come the slide doesn't have a jet needle sticking out of it? Did you remove it?