Hi just been reading an article on cleaning carb body's (external) the guy an ex racer is rebuilding a two stroke and he has used "wonderwheels" the alloy wheel cleaner to clean the externals the results are very good.
He recommends that you use gloves and be careful not to splash into eyes paints it on undiluted with a brush then pretty quickly puts the part into a bucket of warm soapy water as if you leave it a while it darkens the alloy. Another tip with the clear master cylinder reservoir that has discoloured leave it it bleach and warm water overnite resulting in looks like new.
thought it was worth mentioning.
He recommends that you use gloves and be careful not to splash into eyes paints it on undiluted with a brush then pretty quickly puts the part into a bucket of warm soapy water as if you leave it a while it darkens the alloy. Another tip with the clear master cylinder reservoir that has discoloured leave it it bleach and warm water overnite resulting in looks like new.
thought it was worth mentioning.