Hi @evoots. I checked this by starting the radio off of the playlist you supplied. I could not reproduce your issue. In the first one hundred songs, only two were from the 80's. Is there any chance that you've pressed the thumbs up for an artist that has any ties to the 80's music scene? I'd suspect that might alter the radio content. Sorry I can't help you further than this - hopefully someone else might be able to help more.
Btw, nice playlist, nice radio (without the 80's tracks)
Hello again. There really isn't any simple way of solving this as far as I know. The most common way seems to be to create another playlist, mark all tracks and drag them over to the new playlist. Then start a new radio based off this new playlist.
There might be an easier way I'm not aware of - hopefully someone else will add this if that's the case.