I have just upgraded my new RB751G-2HnD to 5.24 because of the bug in the Quickset that stops the wireless from working by setting it 2 nv2 nstream 802.11.
After the upgrade the wireless signal strength has dropped, not by a lot, but enough to prevent good operation from certain parts of the house.
I also noticed that in 5.16 there was a TX Power setting for the domain, that is no longer there.
Is there anyway of getting back to 5.16 RouterOS.