First, thanks to Lionel service who replaced sections of newly purchased Fastrack whose center pins broke after it's first use. (BTW, been using FT for years and this is the first time I've had center pins break.)
Second - always, always, always keep receipts/records of purchases - never know when you'll need them, as in my case. Purchased them new from an "authorized dealer" who shall remain nameless (at the advice of Alan Arnold - thanks). Was actually shocked at this dealer's response to my inquiry about trying to replace faulty merchandise. Needless to say, after having spent literally thousands of $ over the years, I will never be a customer of theirs again because of this.
Lesson - review your receipt for returns policy, know the company's and the manufacturer's warranty conditions. You'd think that being an authorized dealer for Lionel, that you would honor Lionel's warranty. NOT necessarily the case.
Again, thank you Lionel service. caveat emptor