Stripped to bare metal. 80 grit da. 2 coats SPI epoxy. Filler. 2 more coats SPI epoxy. Blocked. 2 coats SPI 2k primer. Blocked. 2 more coats SPI 2k primer. Been sitting in shop for about 2 months and I have just now wet sanded it to 600 grit to get ready for base coat. Perfectly flat and was admiring my work and noticed these yesterday. 3 spots on the hood are like this. First picture shows tiny pimples you can feel. Second picture shows where I sanded the spots down to find out what is going on. You can clearly see the outline of epoxy that was covering these spots. And you can clearly see tiny rust spots which I assume caused the pimples. Very frustrating to get to this point and have this issue. Any ideas what I did wrong or what is happening?