I make no claims other than my personal RNG. Drove 56 hours SRV scavenging - not ED play, I mean 56 actual SRV only time using wave scanner to hunt ... So no claim - just fact, depending on how bad your RNG is, despite being on guaranteed right planet, right method, it is certainly possible to go frustratingly long periods without finding single rare that limits certain mods (e.g yttrium no "....
Similar experience here. Most players report better luck though. No spell of bad luck can last forever, but it can sure outlast me.
Honestly, I don't mind getting variable rolls on gear. Provided we get supplied at a reasonable pace, we could live with that. But the bottlenecks made the situation untenable in my case.