The Universal Spool Weight for 500g Weight https://makerworld.com/en/models/35531#profileId-33140 is excellent but since I only use BL or BL clone spools, the fit was a little loose. Made this spacer to take up that slack and center the weight in the spool hole. I used TPU but anything should work. I use these weights in the AMS and some printer mounted dryers that sit at a slight angle and the 500g really helps.

The designer of the weight @Guilouz doesn't allow remixes although I would have loved to have tied this accessory to the original model.