I've done a lot of searching here in the forums and online and can't find an answer to my question. I purchased a blue magstrike for my 2 year old. It has a slow leak coming from the valve that the trigger touches. Is probably an o-ring inside that's bad. However this piece is sealed. Has anyone rebuilt this? Are there any replacement for it? I found replacement valves online but they cost more than the gun is worth. Any help is greatly appreciated.