The reason for the noise is vibration.

I have sold a lot of german made sawblades. And believe me height does matter. And also Upm. Leuco is, for so far I know, using good steel for their blades. But their are a lot of steel species. Every blade has tension. And by the production of a good saw blade they make the sawblade paralel. At youtube “https://www.youtube.com/watch?v=sUtOMIlv2ok”; (50 seconds and 350 seconds) you can see the tensioning. Mostly German blades need a bigger flange. I could not find it at the Leuco site but on the Leitz site “http://lexicon.leitz.org/productdetail.php?productid=057502&pgid=53480&chash=7cbc86”; you can see that your 3" (75 mm) flange according the Leitz rules is to small. This is a along grain saw and I don,t know your type of blade.

Also after grinding the vibration can change.

Succes Steve.

https://dutchypatterns.com/