[codefox1]

There are as many ways to clean up a chassis as forum members. Smoky grease may come off with a little ammonia with a rag. An old toothbrush and qtips also helps in crevices. Moving on to something stronger, paint thinner (make sure area is ventilated,) or rubbing alcohol. Some like to use GoJo, pumice or auto rubbing out compound, tootpaste, it goes on and on. Beware that chassis stamps and labels may be ruined, so take some pictures first. Be careful not to get any debris into the tube sockets, those you should spray with deoxit. Whatever you do, let everything dry out for a day or so before initial testing begins.