Not one of the Disciples or Apostles claimed perfection for they too knew they were human. They were wise enough however to listen to The Lord and The Holy Spirit for guidance. We should do no less. My last answer to you on this. If it isn't enough for you that's not my problem. :>}
No church doctrine or dogma is perfect. None are nor can they be for they are the works of man.
How about "Jesus Christ is God"?
I think your position self-refutes. If no doctrine or dogma is perfect then this doctrine too is flawed. I think your argument defeats your argument. Nothing more is required.