Just saw this. What I do is fatten up the front sight sides with a little JB-Weld, then file it down until I like the clearance on each side when viewing normally. Then re-zero the gun. I've also epoxied 0.010" shim stock to each side of the front sight on my P-10C. If you add some to the top, you can make elevation correction if you need to as well, if it is shooting high.
I tend to use the LPA sight on the other guns as well, not just the Kadet, so the front sight fattening exercise is typical for me. This won't work on a holstered gun where the sight rubs the Kydex. I think you could knock the JB-Weld off pretty easily. Epoxy and shim stock might even survive that, however.
Joe