Converse well you look like you have a runner. You can't turn those needles around one end is pointed.The straight manifold has 3 screws, the off set manifold has 2.The fourth screw hole you can see is for the off set manifold. Primer cap "O" rings always need replacing otherwise they just leak, don't over tighten the jet to try and stop it leaking.Don't worry bout the inlet rubbers, they don't cause any problems, only had one on the inlet that had a chunk out of it, only one I have needed to replace. At this stage you out of the woods, it isn't drawing fuel in, most likely this will be the float needle, you will need a viton tipped one, don't waste money on the plastic ebay ones, they don't work. The next possible reason for it not drawing fuel in is the pull start "O" ring, take it off, make sure it is ok and wipe a smear of silicone on the face of the "O" ring and refit it. This will work ok for testing purposes. See how you go