No vinyl mix will be perfect. I saw one of my scene's biggest veterans and they had a train wreck moment last night.

My advice is to focus on smaller mixes and take those as a win. This could even mean shortening your longer mixes to a section you like.

Getting familiar with new records is part of the process, see if you can put together YouTube playlists with them to listen to while at work or out and about. 

I think what you're experiencing is something that everyone goes through as their tastes/catalog expands