Hi all,
I had the same problem when I started customising (booted legs breaking). Then I started swapping out the original legs from the klicky I was disassembling and inserting a pair of 'old style' legs, i.e., ones that are less likely to break and, even if they do break, won't be so great a loss. It takes slightly longer, but I no longer break the legs I want to keep!
Then I proceed with the 'hans-on' method. I usually exert pressure slowly rather than hitting, but sometimes a short, sharp shock is necessary. I always use a folded-up piece of cloth as a cushion.
Cheers,
AndrewL