ReadyNV: Can´t get out the Tray...

I would take exception to the description of the trays as defective. Yes, some are sticky, but a few minutes spent with them cures the problem. I am of the opinion that perhaps the trays become "sticky" over time. When I first got my NV+, I removed all four trays without problems. I then replaced the ones for bays three and four since I was going to install only two drives. A little over a month later, the drive in bay 2 failed and I had to replace it. To this point I had no trouble removing any of the trays.

Fast forward three years, and I was going to add additional drives and I could not get the tray in bay 3 to release, so I tried bay 4 with no better luck. I then used the small screwdriver to bypass the button in the manner I described in one post. Once I had the trays out, I looked at the release mechanism and exercised it several times. I have not had any problems getting the drives to release since.

From you post, I get the impression the empty tray was not installed in the Pro leaving one bay without a "cover". This can upset the airflow in the unit and cause the other bays to get less airflow than was intended by the design.

If you had one tray fail, support would most likely replace it, but to ask them to replace all 6 because the releases are sticky is not likely to be sucessful.