Hi All Quick question and plea for tips re cleaning / maintaining valves: I have, unfortunately, had to put a number of my instruments (trumpets, cornet, flugel) in storage for quite a while (i.e. months / years), without the chance to properly prep them for it or regularly maintain them whilst in storage. As a result, valves in several instruments have suffered. Having come out of storage, on inspection even fairly new instruments have now acquired unpleasant oil residue 'patina' on their valves, which lead to stickiness even when oiled up nicely - not a great motivator trying to re-energise my playing following a fairly lengthy (and arguably still ongoing!) enforced sabbatical! Any tips as to how to polish these valves up gently (pistons and casings) - I've heard all sorts from toothpaste to steel wool (NOOOOOOO!) - would be very much appreciated! Many thanks in advance. Keep on banding!