Guys, I did manage to get the new knob on with the clip: I did just as Tony Kovar suggested and put the clip on the arm first, then pushed the knob down onto it, the knob went 3/4 the way or better onto the clip with just my hand pressure, and its nice and snug, I am not going to risk destroying the new knob by trying to tap it on-(I might though) (lol) looked over at the other seats knob and its on backwards!!
Still finding Gremlins (NOT the AMC kind-LOL in/on my car....)