I have bought a couple Grace F9 retips from Peter Ledermann - they work wonderfully.
Your actual experience then is quite good. Yet we have pictures trying to create the impression that because there's a lot of glue it must be a sloppy job. At least that seems to be the impression. Always hard to tell with innuendo.
Ledermann has a whole career built on developing and improving phono cartridges. If you want to learn about cartridges you could do worse than to watch the videos he has up on Soundsmith and YT.
Here for example is a fascinating discussion of jitter, (vibration and resonance in all the different parts of a cartridge) https://www.youtube.com/watch?v=WmwnN_T_wW8 Just the first few minutes should be enough to understand anyone posting pictures of glue is probably missing the big picture. Tracking a record groove sets in motion a complex pattern of vibrations in every part of the cartridge. The first point of vibration is the stylus itself. One might think its the stylus/cantilever attachment point. That seems to be the reason for the pictures. If so its misleading.
The stylus itself is very small but the tip of the stylus, the actual contact area, is microscopic. The stylus itself is bound to vibrate. The better the stylus is supported above the contact point the less of the stylus there is to wobble and flex around.
Now look at those photo's again. It would be super easy to put a blob of glue on there and stick the stylus into it. If that's what it was I'd be appalled. But instead what we see is glue perfectly applied in a smooth curve from as low on the stylus as it can go to as far out on the cantilever. https://www.sound-smith.com/sites/default/files/BO-CL1a.jpg
This can't be by accident. Can't prove it, but watch a lot of Ledermann, try and tell yourself this was an accident. Try and tell yourself its anything other than Ledermann building a bunch of these things and figuring out by trial and error this is better than OEM.
Compare that now to OEM. https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/119490585_4737129112971885_4613339876402529386_o.jpg?_... Notice that not only is the stylus itself not supported very close to the contact area, but the whole thing is projecting out much further from the cantilever. That's a big drawback, because the further it projects out the more mechanical leverage it has to put torque into the cantilever.
This would explain why your experience was, "They work wonderfully".
Watch a bunch of his videos. There's a lot to learn.
If you're impatient, or just want a terrific teaser how good his jitter video is
https://youtu.be/WmwnN_T_wW8?t=1220