I have a dew ideas as to what the problem might be. Perhaps your trigger is adjusted, or stuck in such a way that it is constantly pressed down. That would result in the marker firing immediately when gassed up. Alternatively, it could be a case of damaged electronic parts. In the case of the trigger, simply adjust so that it is not always hitting the firing pin. If it's the electronics, it is a trip to the service centre for some repairs. Best case scenario, it's some dirt in the grip that simply needs to be cleaned out. Hope this helps!
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