The logic is simple. I can miss a heavy lift because:
a) I'm not strong enough to get the bar high enough to pull under.
b) I'm strong enough to get the bar high enough to get under, but I'm not strong enough to maintain good positions throughout the lift, so my technique turns to crap.
b) I'm strong enough to get the bar high enough to get under, and I'm strong enough to maintain good positions throughout the lift, but the weight is still "heavy" so I don't pull under fast enough because it's intimidating, or I do a stupid power snatch/power clean. That's why I can consistently pull 100kg high enough to squat clean, and maintain my positions throughout, but can't squat clean it.
Jacking up my squat (and also doing heavy pulls) helps all of these because:
a) I get stronger, so I can both get the weight high enough, and maintain solid positions.
b) The stronger I get, the lighter the same weight feels, which makes it less intimidating to get under, because it feels "light".
I don't do bananas. Slow, steady and consistent is the way to go.
“Begin at the beginning,” the King said gravely, “and go on till you come to the end. Then stop.”