Ooohh...the dangerous "but is it really that bad?" question.
The worst that can happen is that you may make your grandmother cry. And that certainly can't be fixed......Don't be tempted.
The lever was pretty tough on the one Daxkit I've experienced, the cable will stretch and the housing compress, so make sure to tighten it up a bit after use and it'll feel better after a while.
Seriously, we all want to go fast and breaking it in gently will help that alot. I had self-disipline problems (and a speed demon co-worker/co-builder) that made it very difficult to keep that break in proper. I gave in and it was full throttle after 50-60 miles of under 20. We said, "the hell with it. We'll just buy another one and break that one in right and treat this one as a beater experiment"
But it is just a fun bike for us that neither of us rely on, if you plan on a daily, reliable rider: BREAK IT IN PROPERLY.
I cry everynight with grief that I treated my engine so poorly.....and I can never fix that problem.
Someone else may post a more balanced (and technical) reply: