Worth rebuilding?

I've got a super six carter carb that was layin in a trunk for a few years and the shafts were stuck. I sprayed some wollyworld brand lubricant on it n the shafts let loose. Anywho, I was just wondering if these carbs are worth rebuilding... I'd like to rebuild it simply to learn more about carbs n how they work but if the carb ain't that great is it worth messing with it?View attachment image.jpg