Aye... it's mostly all gone rather well... I also have an earthing fault on that GK I picked up cheap, Carlo, but if worse-comes-to-the-worse the drummer knows a decent repair guy nearby... I'd love to get the Hiwatt up to spec...
Tony... your pup was faulty, iirc, but it was the perfect space filler to replace the damaged pup, so afaic, it's perfect... as for the pup selector, that's just filling a hole... this is as bear-bones as it gets... pup - pot - XLR
Slink... there's some folks here that love that big cavity...