Haha, no, not from round those parts at all
I've already done the pinch anyway, warmed the sleeve up in a bearing oven at work then quenched it in some nice clean oil. The piston is nicely nipped about 3-4mm from the top of the sleeve now.
Gonna give it a go at lunch time.
Let us know how it works! I wonder if since you used heat, that once it warms up a few times if it will retain the smaller size.
Always more than one way to skin a cat!