From the Suntour reviews..I'll likely throw them in the recycling when I'm done. They're just not worth the effort.
DO THE JOB BUT AT THE MERCY OF BAD BIKE BUILDERS
John Dixon on Dec 02, 2020
My Zeron cranks were awful when I got my new bike but the shop I got it from were clueless so I set about fixing it.
Turns out the rough bearings, stiff rotation and creaking were all because the bike shop wound the non drive side lock nut up red face tight. I loosened this of to just finger tip tight, popped the drive side arm back on and it's smooth as anything. This lock nut is unique to SR cranks so setting up wrong can cause problems. If you're stripping threads and bending chain rings though you're either doing it wrong or your bike is cheaper than your riding style.