I just looked at the oil schematic in a 70 service manual and after the oil leaves the filter it branches off in 2 directions. 1 way is to the pass side lifter oil galley. The other direction is to feed all the other parts you mentioned. From what it looks like to me on the schematic I can't see how driving the tube in too far will do that. I scanned and posted a picture of the oiling schematic. The picture came out kinda small so it's not easy to see but the galley leading away from the filter goes over, tee's off to the pass side lifter galley and over to the other items
Something that Dardevil mentioned is the fact that if you use ARP main studs the oil pump will no longer bolt on properly. You have to either use a bolt on the one side where the pump is or machine down the man cap .070-.100", cut the stud down a bit and use a thinner nut than they send, and possibly even grind down the pump body for more clearance. It's real tight in there already and the ARP bolt and nut add a bunch to the height.
Another possibility is you got a defective oil filter. You said it's full but is it letting oil flow? Just another thought that'd be an easy thing to test.