I believe that the point goes to the top (towards the head) and is there to keep the ball from hanging up on the top of the ring (especially with a shallower slope of an EM compared to a new game). I'd check with Steve at Pinball Resource (PBR) before going to Marco for these items. PBR is the king of the EM parts.

I think that the part number is A1218Y for yellow but not 100 percent sure.

I'd recommend that you add the Gottlieb 1972 (Mibs) and the Gottlieb 1968 ((Ice Review, Cross Town) parts catalogs to your order as well. This should cover all your part number needs and show how some of the assemblies go together.

I like talking to Steve. He has saved me from myself more times than I care to admit. As long as you have made an attempt to dig up part numbers I've found him to be very friendly and helpful.