Hi Russ, great to hear from you…
One of my horns is a MK 7 as well, it's a really good sounding sax. I was going to sell it at one point then my 6 was forever in the repair shop which forced me to use the 7 for a while after which I just couldn't sell it anymore.
It was my first pro model which I got in the late 70's from Paris. The only thing I like better on the 6 is the lower cluster on the right hand, just a bit big on the 7, which you get used to of course.
Good luck with it and keep practicing!
