Thanks for posting these, this was the golden age of MX for me!
De Coster was the man (and still is, no way RC could touch him, right flug) and Hannah was coming after him.
A good analogy is that De Coster was Darth Vader and Hannah was Luke Skywalker, for me anyway
By the way on pic 31 Hannah is #2 and Rick Burgett is #8 and in other pics is #7 on the Suzuki Danny Laporte? that would be my guess.