I have the hack in place. I will post pics of what was done later. Quite tidy though, no need for tape...

In the meantime can anyone tell me if after fitting PSE they get like a 'psssssst-psssssst' noise when changing throttle now? It's really bugging me.

I'm going to undo the hack (tube method) later today to see if it makes any difference. Otherwise, back to the dealer again