Posts: 252
Threads: 14
Joined: Jan 1970
Chris,
I have taken a 12C apart that had "coffee damage"; I actually had to cut the heat stakes in order to remove the keyboard PCB. I was able to reliably reassemble the machine afterwards because enough of the heat stakes remained so that I could melt them with a small soldering iron.
Although this was a recent 12C (1995 I think) I believe the principles are the same with your 11C.
As for the replacement display, I'm not aware of any source; one meaningful advice I read here on several occasions was that you should try to locate a similar vintage 12C (the display has changed slightly over the years so its important to get a 12C from the same year or thereabouts) and use its display as a replacement.
Viktor