my friend is having a bit of a problem...during a gear change, his clutch cable snapped (near the top). everything else seemed fine - he kept riding using clutchless shifts until he hit traffic lights. so the cable wasn't a problem to fix (about $25) but the clutch lever (the one on the engine) doesn't feel right. it can be moved by hand up and down (with some mechanical resistance). but it doesn't spring back. any tips/suggestions?