ok, i just shot about 50-60 balls, i used my new Dye Throttle 70/4500 peanut tank, (bought it monday) and now i cant get it off my gun. What do i do know? i will let my dad try it but, i dont know how its on so tight!!?

I tried to get it off but it just wont budge, should i take it to the proshop soon? or just leave it on there? thanks a lot!
-chris