Seems like I got lucky with my two from Batch 6.

One is running stable 500+ gh/s at 250 freq. (46c, 45c)
The other stable at 490+ gh/s at 243.75 freq. Above that this one gets one chip X'd out. (44c, 45c)

Should I consider re-applying thermal paste on these to bring temps down or consider myself lucky and leave it alone?