picked up a used cobra with the front brakes not installed. the guy said he could not ever get the brakes to bleed. when I put them on I can see why as there are no bleeder valves on the calipers. I've never seen or ever heard of a caliper on any thing that didn't have a bleeder valve. anyway I tried to bleed them just using the banjo bolt and gained some but they are still spongey. my question is has anyone tried a conversion from a 450r,250r,yfz or any other quad with any success? or any tips on bleeding these brakes? thanks in advance