Hi guys just need some help and possible advise... I have a geo gsl with 36k shots on the gun was bought second hand and is mint condition beautifull in fact.... Now I used it for the first time at tourney yesterday but found on a couple of occasions the gun wouldn't fire... all was on, batteries in hopper and gun were new gas bottle 4k no paint jams was like the power was off to gun I checked plugs eyes detents the lot etc ... I'm running a spire 260 ?? So guys any ideas what to check next ???