Crazy Extraction Time

I just got a Gaggia classic evo pro. Don’t have a lot of espresso experience. Mostly pour over. I have a fellow opus grinder. I’m getting crazy long extraction times - 1:20 on my last double shot. I don’t think I am grinding that fine. I’m already coarser than what the opus suggests for espresso. Using espresso roast from a local roaster. The shots seem to taste okay - although I’m not that experienced with espresso. I’ve run through some troubleshooting to see if the machine can pump through pressure. I ran without any coffee in the pressurized basket and that worked. Has anyone experienced something similar? Looking for any tips or suggestions