Clamp Bolt 16

Hy guys, i'm from france - and here it was quite difficult to find a good repair kit. So I should buy some stuff from states, it's a little bit expensive and so I need your advices.

First RROD 0020
I made x-clamp fix with spring washers(8), steel washers (16), bolts(8), thermal paste (gray one with silver) and 4 temal plugs for chipsets on the back of the motherboard.
After some hours of playing RROD comes back - 0022, so I redo overheating of GPU - and it's works for more 4 hours or smth (i should redo this operation 4 times already)

What should i buy?:
- good thermal paste (artic silver 5 or other)
- nylon washers
- new fan (more powerful that original)
- additional internal fan
- additional external fan

- new fukung console?

one more question about xbla games - can i play it on banned console (offline) with new april system update - how should i proceed?

thank you very much for any advices.

pababam$gmail.com