Scott,
There was no difference in how the trailer towed, but you do need to be sure
that the hitch is adjusted properly to compensate for the change in ball
height. Hitches are normally not adjusted properly, so take the opportunity
to do it at the same time you flip the axle. Assuming that you have a Reese
hitch you can assess the adjustment instructions on their website (which I
don't have offhand, but I would guess it to be www.Reese.com)
Scott Scheuermann
1960 Overlander