That puts things in perspective!
My auto-disc leaks badly too (brand new) which is not helping my erratic measures. My load calls for 4.7gn of Unique (min load) and my auto-disc with the 5.3 cavity is only dropping 4.2 so I went one size up(5.7) and I'm only getting 4.6, if I go to the next size, I get too much, 5.3gn which exceeds max load. If I stay with the 5.7 cavity I get anywhere from 4.4-4.8gn drop.
I tried the charge bar, it was worse, sometimes only giving me 3.0gn and I didn't trust it.
I ordered an auto-drum....... Frustrated