[lbrachfe]

Never changed the core, but it looks like you would need to remove the front to get it out from what I remember , when it was first thought that the core leaking could have been the problem it was discussed how much work it would be. Until we opened up the top and saw the hose backed off the core fitting.. I have a bunch of heat hoses and exchangers as well as a/c fans that would need to move and they are attached to the front panel.
We are on our way to Texas for some chair fabric replacement on Monday .. Are you guys home already ? ? any action on the house ?? We are supposed to be in Florida, but who knows now ??