The Cat SX is an awesome machine, and now a lot of the manufacturing isn't done on site like it used to be - quality control goes with it to some extent. But that doesn't make the SX any less awesome as, from experience Schumacher are top notch, and although its worth telling people on here to watch out for a particular defective part - do inform Schumacher directly.
if anyone isn't sure then do PM me, or any other team driver, or approach any one of us at the track. I'll always give 100% to anybody asking for advice, and sometimes to people who don't ask.