Probably way more then 6 hours use I bet. Maybe start by, new plugs, 40:1 oil, maybe clean carbs, check jet sizes, make sure both air screws are the same turns out. Then see what happens
14 /44 with a +4 swing arm & 22" superlights is what I run on a 65hp motor, & its to much,second gear take offs dont happen. So sand king is spot on for your set up.
I have a few cascade parts laying around
Throttle cover
Shifter
Chrome handle bar clamp
Thats off the top of my head, I'll have to look through my parts pile