I have a red IPA, pretty much a barleywine that I hopped the holy hell out of, that has stopped at 1.03. I know WHY this happened. One, It's a dark Munich SMaSH. Two, I boiled it for two hours. Three, I mashed at 157f.
OG 1.091 FG 1.03 66% attenuation.
66% is normal when I do high mash temps...