Would like some advice on fixing the magnetic spinner on a heat matle

[Curious_Roberto]

Replacing Magnet in Mantle

Hey everyone, did a quick search didnt find anything on this. Hoping someone has tried this. I can’t get my stir bar to go over 800 anymore. And I have to increase its speed gradually to even get it that high. Can only hit 5-600 during s run. Figured the stir bar itself lost magnetism. So I got one of those pricy Belart ones. Same thing. I’m assuming the magnets in the mantle got over heated or finally lost magnetism. Its a ychem that has served me well for more than a year. Everything e…