Of course there is. The gospels, weak as they are, are evidence. The epistles, the very existence of Christianity. This is all evidence that must be taken into account. If you don't find that convincing, fine. Neither do I. But to call it 'not evidence' is a misrepresentation of the facts, and isn't a very good way to find the truth behind all this.
We have been over that point countless times - the plain fact is, there is no evidence of a real living Jesus in any of that bible writing, neither the letters of Paul or the canonical gospels.
What's written in those gospels and Paul's letters is, as you very well know by now, only evidence of peoples religious beliefs. There is no evidence there of Jesus.
If you arrive at your 6:40 probability on the basis of what's written in the bible, as indeed you just implied that you do, and as indeed is inevitable because the bible is the sole entire source of all belief in Jesus, then your 60:40 belief is actually based upon religious faith!
That’s not to say you are a Christian theist. What it means is you are placing your faith in the religious faith of Paul and the gospel writers. And their faith was overwhelmingly a belief in the supernatural.