About 2 months after I got my Pats Cat 2 attachments, one of the springs broke while I was attaching to an implement. I called them and they sent immediately at no charge 2 new springs, some roll pins, etc..... great to work with.
I continued to use the system for the several days before the replacement spring arrived... no problems, nothing came loose.
That was about a year ago... all is well since... and I carry 1000 lbs on my 3PH almost all the time.... or more.
The Pat's system has been a very good purchase.