I have the Lippard book and it is a handy reference. Just disregard Lippard's self indulgences.
I seem to remember I paid a lot of money for it too. How much are they going for today? I might part with mine.
I sold my last MX8, a skeet model, jug chokes, factory porting and all when I quit International skeet, or should I say International skeet quit me!
Switched to sporting clays, the MX8 skeet gun was not the best for that game, so I bought a used Beretta 682 28" skeet gun with a set of chokes, a more versatile gun.