heres a stange problem.

i am in pakistan right now.
my brother recently sent me a gF 4 ti4200 from gainward from googlegear in america.

the ultra xp 650 128mb,
this is the model that is flawed and seometimes starts flashing weird patterns and colors while playing games.

i thought i was going to be stuck with it because i had no way to send it back to america.

i just found out that im going in in a month and i want to take the card with me and get it replaced.

here another possible problem, i tok off the hsf and applied as3 to the card.

now my question is, can i call up gainward when i get home, and tell them to send me a replacement, its warantied for 3 years, but will they actually look under the hsf and see if i changed the thermal paste.

ill be home for 5 weeks from the middle of march. will i be able to get a replacement from gainward it that time.

what should i do?

thanks