I fitted ten rods batter-side on my Ludwig 402 and left the snare-side with the original rods unchanged.
It took some getting used to, not being able to start tuning by "feel", but as my drum was already in tune, I replaced one rod at a time, so was able to maintain the desired overall pitch throughout.
Rehearsing and gigging:
My Ludwig 402 sang!! And it has not detuned since. This is a great product which i would recommend unreservedly. I've not made any head changes yet, and perhaps the "stay-tight" effect may lessen over several head changes (the manufacturer says they will feel slightly looser after the first use), but still a once-and -for-all solution to any troublesome snare. You can now fine-tune by ear and never have to worry about maintaining your precious sound throughout a gig!