Did more work and adjustment on the Yuxin blue I magnetized this afternoon - I used 4x2 N35 corner-edge, and 3x1.5 N52 edge to edge. My big problem with setting up this cube after magnetization is I swapped springs, with thunderclap springs you have to run the tensions on the tighter side to prevent a lot of internal catching. But the cube has a slight design "flaw" as far as reassembly goes - the center pieces have two slots, one deeper and one more shallow, and its easy to install the center edges flipped. If you do that you'll hit problems. Check your centers during reassembly and make sure they're not flipped 180 degrees on this cube.
Anyway getting back to the magnets and overall cube feel - at first I was a little unhappy but this is feeling quite good after solves and comparison with some flagships. With thunderclap springs the blue feels a little looser compared to a wuque M or thunderclap mini that I magnetized. But this cube is _quick_ and I'm really impressed with the inner layers- did solves compared to a Aosu GTS M and the inners are much better and outers feel good.
Setting up this cube is a lot of work and I still have more testing to do, but a magnetized yuxin blue is like nothing else.
@sillyturdle feel free to PM me, sounds like I've magnetized some cubes you're using, lets compare notes before you magnetize the 5x5