still not listing the doctrines...there is difference between believing only 1 and believing all but 1. if they match up with Catholicism the most, except for that 1 thing, you're trying to kick them out. You're wrong to do that. Plus your church would go down the toilet if it only kept people who followed the way it sounds like you do. It likes the money, so it is very willing to take in whoever wants in.
Okay, for example, it puzzles me why someone would claim Catholicism if they do not believe that Jesus Christ is the Second Person of the Blessed Trinity. It is not up for discussion. If a person does not believe that the Blessed Virgin Mary was Immaculately Conceived and remained a virgin throughout her life. If you do not believe that the Eucharist is the True Body and Blood of Christ, and if you do not believe abortion is murder.
How's that for a start? Accepting the doctrines is not the same as being able to intellectually understand them. Just because all of these things seem ridiculous by today's standards does not mean that they are not true. If someone does not believe these things are true they could easily join another faith tradition that teaches something more acceptable.
Remember, though, I am not suggesting that the Church kick all of these people out. I am asking why these people don't leave on their own. Big difference.