Got the carbs on the 750 thanks to 3 brand new Honda insulators Moto Guild had in his case of misc stuff. Tony sold them to me for $25 plus some good beer to be provided. Decided to replace the 125 main jets in the carb with the replica 105's in the carb kits I bought. They'll do to get it running.
I also confirmed the starter button is destroyed, but I ordered a replacement last night in anticipation, should be here next week. Managed to lose the little ball bearing, so I need to track down a replacement. I might have a right switch in my stash, but I can't check until Saturday due to the stupid hours Public Storage is open during the week.