Out of balance machine (or combination) can be a pain to flip.
I built my flip top over 15 years ago with one side being an adjustable outfeed table

and since then it has had many diversified residents which seldom complemented each other in mass.   Since I managed to give away my Kreg Foreman to some unfortunate sucker, my disc sander is the lonely squatter. 
To facilitate flipping, I installed a "lever arm" consisting of two tubes with one fitting inside the other and both sliding in a pair of eyebolts... pulling out the arm makes the imbalance just that tad easier to tame,

If your first cut is too short... Take the second cut from the longer end... LBD