Unisons and Stability are the two most important skills you absolutely have to have if you want to have any success at all tuning pianos.
Clean unisons can hide many defects in your tuning.
Sour unisons will ruin everything good about your tuning.
And without the ability to have each unison string stay where you put it, the strings will slip on the first hard note, causing any clean unison to sound sour, ruining an otherwise good tuning.
This happens all the time. But with the proper instruction, it doesn't have to. You just need to get good training that makes these skills so much easier to get.
That's what the Go A.P.E. System does for you.
The video lesson below explains why it is so important to get awesome sounding unisons that STAY which is so easy using the Go A.P.E. System.
Unisons and Stability
Look for the next email that will tell you why It Is Difficult to Find Proper Instruction in Getting Pitches to Stay! (Stability)