I don't know whether it's been changed or not yet, I said if one didn't turn up to just leave it and I'd find a proper one on eBay or something. It's not hard to change.
Other problems are all sorted by the way. CV joint smelled of burnt grease apparently, but the oil leak was all down to the T-piece for the oil pressure gauge sender and the intercooler bolts are fine. Just the top one was loose.
Means I could've managed a few extra laps at Blyton the other week if I'd looked a bit harder, but it's not really worth chancing.