Wow..... you are something. Not only do you not know how to do something, come here, ask questions, but then you go on to tell the rest of us how to respond. You are really full of yourself, huh ??
Your words, honestly, seriously and then you say we're arrogant, scolding or too important..... and now you want us to go away. I don't think anyone is reprimanding you, but when one is a professional, they are supposed to know going into something what they're doing.
YOU are the arrogant one, in this picture. You are mis-representing yourself as a professional and now scurrying around to figure out how to do this. The sign was already damaged and you think by watching a u-tube or asking what kinda glue to use, you'll become a master fixer-upper. Yep, you take the cake.
So, Tex...... how'd you find out it was jewelite ?? How do you know it's poly carb or modified acrylic and not acrylic ?? Do you have proper insurance for going up in the air to fix this thing ?? Will you be pulling a permit ?? Personally, I've never found a single letter 2' x 8' which lost its edging without some of the other letters failing, also. Are you sure it's jewelite and not an aluminum edge lip ?? If you sported up some pictures, maybe you'll get some real help. But, if you feel we're too malicious towards you, by all means..... find someone else who can perhaps hook ya up.