If the money matters to you make your own carb spacers out of wood.
A make a few, mix and match and try them all. Use what works the best.
Lots of wood in Sudbury. Sud - burr - y
Last time I was in Sudbury was for a boat race/concert weekend and apparently just missed Shania Twain by about 10 minutes.
Good town.. Where do you race? North Bay?