HI. I'm trying to replace the 2420 compression drivers on my 4343's. I was thinking it would be a fairly easy process since the top front baffle panel on the 4343 is removable. I first removed the midrange driver, then the 12 screws around the perimeter of the baffle. However, the baffle did not want to budge. So I then removed the 15" driver and tried tapping the back of the baffle with a rubber mallet but it still does not budge. So plan B was to loosen the 4 screws holding the 2307 horn to the baffle and pull the horn and driver down thru the enclosure and out the 15" hole. But there does not seem to be enough room behind the compression driver to pull them out as a unit, let alone being able to get them past the mindrange box. So now it seems the only alternative, if the top baffle does not come out, is to reach up inside the enclosure and loosen the three bolts holding the compression driver to the horn. Is there some trick or advice someone can give me to break the baffles free? Or is there some other easier way to change the compression drivers without removing the top baffle? I appreciate all the advice I can get.