plus with a pancake filter you're more likely to suffer from carb icing If your engine is std, keep everything else std!!
yes stick with what i have as i read some can come off and cause grief on the side of my carb yhere is a pipe about ten or 15 mm been plugged off any idea why
If its on the manifold just below the carb its the vacuum source when a brake servo is fitted. Usualy plugged when not used.
Left hand side of carb connects to vacuum advance can on distributor, if you have the correct distributor.