Stereo sounds for the C421?

I love the Flight1 Cessna 421!! But (and there is always a but!) the sounds are decidedly not stereo. As faulty as the stock Baron and King Air are, one of the things I truly like is the feedback you get from not having the props in synch. It's extremely realistic (just as annoying as flying is a real turboprop - those things are never fully synched!). Now that I have a real throttle quadrant and can control throttle/props and mixture separately, I should be able to recreate the "whoooop...whoop....whop.whop..whoop...whoooop" sound and I can't. I think both engines were recorded at the same time (while in synch)and that sound attributed to both channels. Bottomline, has anyone come up with better sounds?David