no probs robert,as ohms will tell you i dont rest until every last niggle has been ironed out even after collection.
Now re the knock sensors,they are a known weal point on the 3s-gte,ive replaced a few for the odd mk2 owner,theres two on the v6 so im hoping they are made of the same stuff,knowing toyota, probably are!
The sensor is £110 from the dealer but the twosrus one which is supposed to be tougher comes with an adapter and pigtail of wiring for £70 delivered.
I wouldnt go out of my way to replace this before the swap,it generally only fails if you have overboosted violently but even then its rare,saying that they have been known to shatter going over speed bumps too!
A bit of a design fault by toyota,they occassionally do have them it seems.