John, it's gorgeous stuff! I'm still not convinced you haven't been making dry-cured sausage for a couple of years, but shucks... it 'shorrre' does taste good eh?
Hey, try something for me. Take an ultra-sharp non serrated knife and slice down through another part of the sausage. Don't use too much down pressure, and use a "sawing" motion if you have to. If you still get the "hollow" in the center part of the sausage, I can give you a couple of tips.
Hey, if you keep up this kind of work, you're going to make my buddy Uwanna jealous...

and his stuff looks better than the photos on the textbook covers!
Nice work pal!
Best Wishes,
Chuckwagon