Yes, please include the links. The link stoppage is to hold off bots that spam messages on the forum with links.
Did you butcher the heat spreader on all of your cards? I know you had done one. I am going to suggest the copper shim again. I know you said you weren't comfortable with it, but you are comfortable destroying your warranty, which is bass ackwards to everything that makes any sense at all.
http://www.amazon.com/gp/aw/d/B007REGGFK look at that. Those are the ones I purchased and installed for my friend. $9 could save your warranty on 2 separate cards.. I am not going to suggest this, I am going to tell you that you need to get these in the future. You simply put thermal paste on the die, spread it out, set the shim in there, and then put thermal paste on top as if it were the die.. It's that simple.
If you are determined to cut the tabs off the heat spreader, and destroy the cards or overheat them, you are crazy.
I still have no idea what you are talking about with the solder on the card that is fully dead, where you said it got on 3 capacitors. How did that happen? Was that during the modification? Why haven't you RMAed the card? There should have been no way for the card to get hot enough to make the solder reliquify and start running.
Are you seriously considering cutting up the K|ngp|n heat spreader after having lost multiple cards over this same thing?
Stop with the thermal pads. They don't need to be touched. You can monitor vrm temps in hwinfo64, so where the idea of needing a laser thermometer is coming from confuses me. the tthermal pads, which I tried the extremely expensive one, and can't remember the name, which lowered my temps by about 3c. That isn't enough to waste the money. Adding heat sinks to the heat sinks isn't going to do all that much either.
At this point, I am not sure where you are gathering the information, but you need to ask direct questions, make them short, and put a tldr portion in. Your posts are getting longer and longer with justifications as to what you have done, and make less and less sense. You are destroying your hardware with a great rate of failure when less than $20 would have saved every single piece, and you continue to aim to do the same thing, seemingly hoping to have positive results one of these times. Stop. It obviously isn't working.