72 Duster Tail light refurbish

I'm getting to the point where I want to start on cleaning up and refurbishing my tail light assemblies. Before I start tearing them apart I was hoping I could get some advice on anything to look out for. What is the best way for removing the original gaskets around the outer assembly? Looks like they are glued on. Once the gaskets are removed do the lenses come off easily or are they glued on as well? Looks like there are two tabs on top and two on bottom where the lenses attach to the buckets. Since these are 72's and a bit harder to come by Id like to take my time and separate them correctly to avoid any damage.

Thanks in Advance for your input, it's appreciated!

Jerry