I opened the dump valve too far on one of the pumps (it was raining, got in a hurry - don't ask) and now I can't turn it back in. The valve turns a little each way before it feels "stuck" and I don't want to force it since I obviously don't know why it's stuck. Could it be stuck on an o-ring? Its a bdp-10a pump on a scag tiger cub. Any advice would be appriciated for this novice.