Need a /6 valve spring compressor...

I got this one from Amazon. I used it on one set of BB heads and two sets of slant heads so far. It works well, but you do have to set the gap correctly, like Goldilocks. Not too tight, not too loose. Other than the operating handle needs to be wider so it doesn't try to cut my hand in half, it works well.

https://www.amazon.com/gp/product/B07CGWQ4NM/?tag=fabo03-20