Mine was like that for a Bit. I got a right hand control off of ebay UK that had a adjustment on it for the clutch. It was for some china Monkey bike?
For the 2-3 weeks it took to get over here I used a small zip tye around the cable itself at the lever. I left it a bit loose and just tucked it into the handle bracket itself. I took some 150 mile trips like that
You could get a simple pitbike lever with clutch adjustment but then you need to worry about how the switches would work with that setup.