75% of a good glue joint is surface prep. Especially metals. Removing paint is a for gone conclusion. You want to have tooth as they say in the adhesives industry. Make sure to sand the area with a course sand paper so there are small ridges and scratches. This gives a 3 dimensional structure for the adhesive to bite into. This is critical when adhering metals. Then clean the area of debris with alcohol or similiar, even Windex. After that CA glue. If you want to use a kicker (I do), give the joint a few seconds to flow then apply.

Perry