+1 on sending to Assos. If you bought from a lbs they will handle everything and you won't even pay shipping (personal experience with the s5 f1.13 or whatever the top one is).
This month's Peloton mag has an article on Assos and mentions their generous repair policy as well.
Btw the f1 uno is more comfortable than the f13 on long rides and you can almost buy 2 uno for the price of the f1.