good lord i'm glad i took it somewhere to have the belt done now

that sounds even more complex than i imagined. there's no way you can slip it down and maneuver it so it's looped round the alternator, so you just have to unbolt that? (crazy thought)
glad to hear that about the whining noise off the new one, i was convinced they'd put the damn thing on with the wrong tension, it was howling like mad... though it was pretty cool pretending i had a charger when stopped at lights...
w-hoooooooo wwww-hoooo
'course, the lack of wastegate chuff was a giveaway
the drain plug thingys aren't too hard to get, dunno if you can get em at halfords but i found one (after asking for it... not on shelf) at a local small car spares shop. double-ended hex thingamajig that was 17mm on one end and 14mm on the other, with a central 19mm that a deep breaker bar bit or similar could attach too (no hollow middle for a square drive - put the 19mm on it instead). it actually listed VW gearbox drain plugs as one of the applications. £2.99 - quite a bit for a small piece of brass, but what you gonna do without it?!
seems to fit nicely with the 19mm end for my extensible wheelwrench-cum-breaker. its not a deep socket so it only mates about halfway onto the central piece, but it may be enough........ time will tell.
(that's a good tip about taking off the filler first

... means you can also see exactly what level the existing stuff is before draining it!)