I've just installed a Flickstand on my '80s Univega. But I'm not certain how tight it needs to be against the front wheel. Should it be tight enough to keep the wheel from rolling at all? Right now it keeps the wheel from turning side-to side, but the wheel can roll backward, and even forward a little if the tire is wet. Do I need to snug it up tighter against the wheel, or is it supposed to be this way? I bought the Flickstand used and it came without any instructions, so I took my best guess on how to do it based on pictures I found online of bikes with Flickstands installed.