When I picked up the sled, I talked with the mechanic who put it together. He functioned tested it forward and back, and it was fine. They're just taking precaution and telling guys to try not to use the reverse until they find out which ones actually need to be fixed.
The first thing my dealer told me when i picked up my 1100t was don't put it in reverse because some of them have this problem, not all of them, but until they find out the serial numbers of the ones that need to be fixed it's best not to try it. You'd think other dealers would be aware of this...