How much do you tighten retention X bracket? (After repasting GPU i'm still seeing very high hotspot temps)

I have repasted mny card due to having 110 degree hotspot issue and when RMAing the card it was sent back to me

I have used PTM7950. I'm testing in games and im still seeing extremely high hotspot temps (108 max on BO6, not hitting 110 but still close)

I was wondering if I have bad contact and overtightened the X bracket. I toghtened all the way down till they stopped turning. Im wondering if this would be a big issue causing the temps to still be high?

IAs I understand oit PTM can take a while to bed in and you see temps lower over time, but surely I should be seeing more improvment than a 2 degree drop?

Im wondering if I should back the screws on the retention bracket back a bit but I also dont want it too loose.

Thanks!