You're Tan UK is not hanging properly as Cavscout had mentioned. The back is about 1 to 2 inches shorter. If this is wear you want to wear your UKs then I think a Beer-cut or "BC" is what you need. The kilt is cut different in the front to allow the kilt line to be even when viewed from the side. I would return it and try the BC kilt.

I like your Xmas present by the way

Cheers,