Re: DW9002 beater position
I'm a little hesitant to say anything more, in case it sounds critical instead of helpful.
But I think maybe you should try lowering the foot board a bit, reducing the beater angle, and tightening the spring up a little.
It sounds like somehow you've come to avoid any tension on the spring. Don't be afraid of it - spring tension is your friend - LOL
If spring tension really is a problem for you, you could also try a little weaker spring of the same length.
All that said, if how you have it set up is working good for you, and you don't want to change it, then maybe your only option is to reduce the angle on the slave beater. This might require more spring tension on the slave side, which might also be your weaker foot. That might cause some type of imbalance problem.
I hope you let us know how you resolve your dilemma.