Ok, so I mocked up the #3&4 side with blu-tack and torqued the head properly. I put in the cam lifters with the pushrods and turned the motor a few times to see if the lift-n-fall smoothly on their own steam. #3 exhaust side lifted but didnt go down on it's own steam(with the weight of only the pushrod), so added some oil and 'aided' down a few times turning the engine. After that it would lift-n-fall fine. Next, put the rocker arm on, back the adjusters out all the way and bolt it down securely. Again I turned the motor a few times, and then commenced with valve adjustments. Turned the engine a few times and there were no obvious 'counter force'. No resistance at all.
Disassembled everything(while saying to the wife:"Stay here. Before you leave I want to show you something") and went ahead making a fool out of myself in front of her(oh, the humiliation. There goes the ego!

). No marks on the blu-tack at all!? Huh!? What the heck? The blu-tack was about 3mm thick on the piston head!? At first I thought that I didnt place it well on the piston, BUT, where the intake valve hit the #4 piston the blu-tack was on the mark!?
Now I am at a loss. the only thing I can think of now is that I had a coil bind on that valve, causing the bend PR(but saying that, I should've felt it turning the motor over by hand). Or, it slipped out of the rocker's cup and on the way out the edge of the cup caught it and added +/-5mm of lift, pushing the valve too far? I understand it like this: The valve got hit when the piston came up for the compression stroke? How else can an intake valve be hit? Valve float? It should never be open when the piston is on it's way to TDC, no?
I will do this same excersize AGAIN tomorrow, just to make sure I wasnt a moron. I will (hopefully have time to) do the rocker geometry measurements, if they check out, then I dont know what the reason would be for 2 bend pushrods? It cant be badly adjusted valves, because by nature(when it comes to these kind of things) I am paranoid and re-check measurements 3 or 4 times!
More later.