Thanks, Irondragon! I abrasive blasted and painted everything, inside and out. I was told the hand-crank gearbox leaked oil, so I flattened all the mating surfaces and used permatex RTV gasket material to seal everything. I've done a couple heats with coke and it works well.
I've seen the images and read the company history on gracesguide.co.uk.
Thanks again,
Matt