i had a dual feed line on my stage 2 cp3. i recently put the dual cp3's on my truck and have no need for the feed line anymore. when i took the feed line fitting out of the cp3 there was a needle fitting with a spring on the end. i called II and they said there should be a ball also. question is do i need the spring and the ball when i put the stock fitting back on the dual feed line? or is that just to the dual feed line fitting.? thanks