hi, i recently got a bass pedal with a drumset i bought. it was all pretty cheap so i didn't expect too much but it appears the bass pedal is broken and i was wondering if i could get some help repairing it so i don't have to buy a entire new one. basically i've gotten it to the point where i can push the pedal and the thing that beats against the bass head will slam down but it doesn't go back up. would appreciate any tips.if this is too vague sorry, just let me know what you're missing to help me out, thanks in advance.