My CV axle keeps popping out

Hello, I would like to know what the cause of this problem is. I bought a 1993 Honda Prelude and the previous owner said that it kept ruining his passenger side cv axle. He tells me the problem is that he had it lowered about 2 inches. I dont think this might have an effect on the axle. He also told me that he swapped the prelude tranny with an accord tranny. A guy at a car shop told me that the reason is because the previous owner didnt put the proper transmission mount on it(the guy's mount was a bolt through the old mount and the tranny) after swapping. Any suggestions?