Obviously, you are the only one that can judge if this new reaction is to unpredictable or dangerous, but from what I read, it doesn't sound like a "bad" thing. It takes a bit of effort to load the shovels through the bottom of the turn and then release this energy at the turn finish. I'd experiment with new setup before trash canning them. Most skiers never do generate enough energy to float through the initiation of the next turn.
Generating a nice float phase at the turn finish is so key IMO to being able to retract and hookup the next turn early. I'd try to reduce/minimize some of the exertion at the turn finish/pole plant and reach a little further down the hill with the pole plant.
If you can get the sun at your back when skiing, look at your shadow and focus on making it look and ski like you think a skier should look and move. For some reason this almost automatically centers and balances me instantly. I just "make" the shadow dance and don't even think about what I'm doing. This may help you get a bit more forward than usual to take advantage of the new early shovel pressure and slightly reduce the amount of rebound you are generating at the turn finish.
If you foot is more secure because of the shims, it would likely have some benefit to energy transmission and feel/sense.
I'd give them a chance for a week and experiment, you may learn to like that extra pop. When I skied Raichle Flexons, I always had a 5/16 shim under my heel and really like the power and feel.
GL, don't get hurt while trying to tame that powerful release.