The clutch lever on an E50 is used ONLY for starting. ONLY ONLY ONLY. It's an automatic transmission. It needs no help from you to do anything -- it's all twist and go. This is part of the reason why mopeds have such lax registration/laws in most states -- because they don't have manual clutches. In fact, if it did have a manual clutch, most states would require you to register it as a motorcycle.
I bet if you stop pulling your clutch lever while you're riding (and you fix your jetting and all that) you'll see a marked improvement in how well it rides.
Here, read this. break>
And for good measure, read this too.