I shot the Tamco epoxy on my doors as a seal coat prior to paint. I have this spot on the door. I suspect it's a fingerprint where I must have touched it with an ungloved hand at some point. I must have missed getting it off when I did the final wipe down with wax and grease remover.

So how do I go about sanding this out and re-coating with epoxy primer?

I'd carefully block it with p320 (personally, I like wet sanding), feather it out well -- then shoot a couple of coats of reduced epoxy over the general area.

Thanks, Chris. What do you recommend for reducing the epoxy? I'm using the Tamco 661.

I have the faintest bit of orange peel as well. I'm thinking I might try reducing it slightly and see if it helps with that as well.

Any high quality urethane reducer...no more than 5%