The mods from Afterburner aren't applying correctly to Hover. Afterburner doesn't actually supply a true flyspeed buff ingame. Instead it raises the max fly speed for all flight powers by the percentage enhanced by the power. Consequently, Hover is still pretty much impossible to raise above 39-40 mph due to ED cutoffs. However, in Mids the Afterburner buff seems to be treated like a flyspeed buff that also adds to the buffs from Hover. I was seeing an 80ish mph fly speed reported in Totals for Self -> Misc Buffs when I still only get 36 mph in CoH. I did confirm the numbers on Fly appear to be correct, including the cut offs for max fly speed with Afterburner on.
By the way, GREAT job on the new updates, guys. You had them out really fast and almost everything I wanted was in them, enhancement boosters included! Thanks a lot.