Morning all. I like to think I'm pretty clued up with plumbing and have done most of my house with no problems. However we have just received our new kitchen units and have found that the corner unit only has a 30mm utility gap at the back (the other units have a more reasonable 40mm). This means my 42mm waste is pushing the unit away from the wall much more than I would like. The back of the unit is solid so this makes things more tricky. Any suggestions how I might get around this problem? I was thinking of using 32mm waste but I'm not sure that's a good idea for kitchen sink waste. And there is not enough drop to run the waste under the units.