i bought a jamsport efi head 4 my erst with a piper 285t2 cam,how would i b able 2 dial the cam in on the vernier wheel,i know ive got 2 get the exact tdc on number 1 piston but cant remember how 2 adjust the cam,did it all on an old 2.1 pinto i used 2 hav but just cant remember how