I spent the better part of the morning with your AH-6J. It installed via OVGME perfectly.
I bound my controls like a normal helicopter, without any curves for my first few flights.
Lifting off, its very squirrely. It wanted to rotate backwards immediately and wanted to "fall off" if not kept perfectly centered.
So I went back into the controls and used similar settings to the Gazelle, because of its size.
For Pitch & Roll, I used 0 Deadzone, 100 for X, 80 for Y and a +5 Curve. For my pedals, I brought it back to -10 and again to -5, settling there. With these, I was able to maintain a stable hover, but again with some left stick and pedal to prevent it from drifting off right. As I moved into forward flight, at 80kts, I'm having to put nearly full forward cyclic to prevent the nose from going skyward. I flew around and made several transitions into a hover and landing. No VRS was encountered that I noticed and you mentioned.
On the final few flights, I armed up. No noticeable effect of weight or change in the FM with weapons on board. So these were purely cosmetic but very fun.
All in all, you've got the beginning of a believable helo FM. It has inertia and isnt on rails. Some trim would be nice, to overcome the excessive amount of pitch.
I look forward to the next version.