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I get my chrome slides from British Cycle Supply.

Believe it or not, the softer body actually wears the harder slide.

This is not unlike a machinists process called lapping where a soft (often copper) expanding mandrel is used to hold abrasive paste. The mandrel is rotated in a harder cylinder to give it a precise finish.

OK, so we don't squirt toothepaste onto our carbs but a certain amount of airborne crud does make its way into the intake and some of it sticks in the carb - to the softer metal which will now wear the harder metal. Check out a modern carb, they are all hard chromed or hard anodized. The hard slides will last a loooong time and IMHO you shouldn't ever wear the carb body out.

Enjoy hard slides, I do.


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