Right. I have pressure. Lots, it seems. What a mission getting that bloody sealing ring seated again was! Pressure is even lifting the weight so that must be quite close to "Bang" point - but no steam from the overpressure bung either. But the pressure indicator is not doing anything so either I get to fix that (could be WD40 up its bum again) or I get a new one, and after getting a snotty response first time from Presto I have E-shouted and they are co-operating.

First, WD 40.

Next heat it up like buggery and hope the overpressure valve saves me from a large explosion of superheated steam.