Does anyone know how difficult it would be to have a Utilikilt brought down a size?

I apparently have dropped some poundage and my UK is too big now. It is gapping when the belt is buckled. There is a main seam that runs down the back where the pleats meet and it LOOKS like it would be relatively simple. But then again the seam does not run all the way up through the waist band so I am not sure.

This is not something I am looking at doing myself but would seek out a tailor.

Just curious if anyone has had a UK resized, in particular bringing it down a size.

Thanks!