Yesterday I received my gamo whisper deluxe from cabelas. After putting about 300 shots through it yesterday and today, I decided to buy a GRT-lll trigger for it. Before I ordered it I read that if your trigger was plastic, then this mod would not work. So I checked my trigger with and earth magnet and sure enough, it was plastic. So apparently I have the new dumbed down model of the whisper deluxe. Since the GRT-lll will not work, is there any other upgrades I can use or anything thing I can do to help the trigger.