pex-b

I am doing some plumbing and a few of the stainless steal crimp rings are getting cinched by the tool it seems, it doesn’t happen all the time just about 2 in 10 see the attached images of one such ring. Now the join (in this case a plug) doesn’t leak and seems fine but it doesn’t quite feel...

Does anyone have recommendations on the best way to connect PEX-B (uses copper rings) to Uponor PEX-A (expansion fittings)? The house I’m in has the main line using Pex-B and copper ring fittings. I’m splicing into it to install a soft water loop. I have the tools and some experience to...