You shouldn't be. When was the last time you actually replaced those RSB bushings? Willing to bet they were toast, and had a bunch of grit and road debris in them, causing the coating to get worn away and rust through. You need to keep those bushing fresh and greased. Mine need to be replaced every other year or so.
I finally found the Hotchkiss website. Based on the product description, I have a feeling a warranty claim would be denied because it was installed on my daily driver. WMW did the install of the RSB & the camber links at MOTD. Bushings were greased with every 5k tire rotation. WMW never said a word about “track-only or warranty is void” because my anal-retentive, nuclear & mechanical engineer husband would have vetoed the purchase. (The anal-retentive husband is now my ex-husband!)
Contact Chad at Detroit Tuned. He will get you exactly what you need. 596-792-6464 https://www.detroittuned.com/swaybars/
Second for Chad. I relube my bushings every year with spring tire change. Easy to do. Also, what setting did you run the 22mm at?
SOLID...when I first got it i thought it might be too heavy because I had never had a 3-hole adjustable rear sway bar before. However, since the Cooper is not raced [but it does the TOTD well], the added weight in the back gives it a bit more stability, I think.
www.usfreecoupons.com/madness-motorworks-coupon-code Click on "get code" or "deal" and they will walk you thru the process
It's here: https://www.hotchkis.net/ We have all the info you need, as well as some very informative videos under the video link. Best bar out there ! https://www.detroittuned.com/h-sport-25mm-comp-rear-sway-bar/