Today while I was trying to make the lever tighter, I untightened the bleed allen screw on the caliper (but did not squeeze the lever) and then tightened it right back up after. I couldnt not find out how to make the lever tighter so I just put the wheel back on. When I went to squeeze the lever i had no pressure at all? The wheel will only lock up whenn the lever is all the way to the bar. What the hell did I do? Do I just re-bleed the damned thing? And how do you make the lever has less pull?