i use W5 multi purpos cleaner from Lidl i beleave you have them in the uk. this stuff is Really good. i dump it in a dish with some luke warm water and get an old tooth brush and just scrub, as for Glue Epoxy is best use ca for the brass.

when you mix teh epoxt mix a small ammount at a time because you only have about 5-10min working time, as for primer i use vellajo. then use any paint you want after