You definitely do not need to remove the springs to R&R the GRMs. That's bad information on a DIY site, R&Ring the springs can be an extremely dangerous procedure for an amateur/home mechanic. There are at least a couple ways to get the clearance to change the GRMs, my favorite is the *ratchet strap method* to pull forward the spindle/front wheel. Like many other suspension jobs, it's no big deal with the proper skills/tools/equipment and absolute masochistic hell w/o all of the above.

I'm sorry to hear about these Lemforder mounts. The quality of all parts has been taking a schit lately, including dealer supplied parts. NOTHING is what it used to be, and I'm talking about even 1 year ago. Thank globalism for that, I guess...

That said, I would not put anything Meyle on my cars unless it was an extremely insignificant part. I have seen someone get (2) identical defective brake MCs in a row in Meyle boxes. I could probably make better parts in my bathtub.