Learn to sew?

Actually, I'm not really joking. Clothes just don't fit me unless I make them myself. Fitting is a perpetual problem with pants, but once you have a pattern that fits, you're golden.

OR, see if there is any sewer in your area (dimes to doughnuts there are) who would be up to the challange. You might even spend less for a better quality product, though I wouldn't count on it.

Just another idea...