Steve wrote:
I am trying to fit a new (Franke) stainless steel sink into a
worktop. The sink does not sit flat - it is bowed so there are gaps
of up to 7mm at between worktop and sink.

Various questions:

Is this typical or have I got a defective sink? I can imagine that
small gaps are common but mine seem excessive.

I've never seen even a cheap Wickes sink bowed by that much. Get it
replaced.

--
Dave - The Medway Handyman
www.medwayhandyman.co.uk