Any scans of the crap burns? Are the PIF clumped or spread out?
I’ve noticed some of my newer batches have more tendency to clump than other older batches.
Do the burns work in players though? I’ve had some MCC03RG20 that scanned awesome but played crappy in a fussy DVD player. Also, scanned in a BenQ instead of a liteon showed far more errors.
So I wouldn’t base so much on a scan as even a good one can stuff up. I wouldn’t like 6000 PIF though, but there’s a huge difference between massive clumps and even spreads of PIF.