The book "The Trials" by James Moffatt quotes Mike Farlina who beat Weaver for the FS spot. He also won the GR spot and was a senior in HS at the time. He said he lost to Bill Rosado (who was the favorite) by a 9-8 score in the 1st round. Weaver pinned Rosado in like 20 seconds. He wrestled Weaver in the final round and won 13-7 to take the spot. After the trials he went back to finish his senior year at York HS in Elmhurst Ill. He only won his State once as a senior in 1976.
The book is great for any wrestling fan - full of info about all the Olympic trials from 1960 to 1988