I’ve read that flitz is a great polish to use for nickel. Is it necessary to completely disassemble it to polish it ? Do you only hand polish or use a dremmel ? How do you reach the places where you can’t get you fingers ? If you do use a dremmel which attachment do you recommend ? What should I clean it with prior to polish ? Should it soak in something for cleaning ? Should I just have a professional do it and what price should I expect to pay ? I don’t want to risk damaging the gun it’s somewhat valuable. Sorry for the long list of questions any help would be greatly appreciated.