Well, that needs addressing. The B-pu (as you probably know) needs to be 'hotter' than the N-pu.
I knew what you mention. But 10.5K output on VM PJ bridge pup sound just notable much louder than my another 8.3K split J bridge (Cort VTB-ST pup). As loud as Vintera 50s P pup.
Meanwhile, the bridge wire wounding area (distance between bobbin) look taller than regular J pup too. Shame i dint take shot for share right here.
I set the P pickup height from 3mm-3.5mm (from G to E) , and J pup constant 3mm from G to E but raise both A and D adjustable pole piece a bit to get both pup has same output while solo each other. No volume drop even both pup run.