Very well, however, the only objection they raise is about the Real Presence. If their objection were invalid and there is no Real Presence than it is not cleared in the Gospel. You simply imagine that their obejction was to Jesus being the Christ. The stated objection is different.
I know what James meant and he is in harmony with Paul.
No, you don't know. It is impossible to have the soteriological belief you have and write what James wrote. He was too emphatic. On the other hand, the Church has no difficulty reconciling James with Paul -- see my above post.
Jesus nowhere says that his body must be sacrificed time and time and time again
We do not teach that is must. We teach that the elements of the Eucharist become the Body of that only sacrifice. "This is my Body".
this verse saying that I am not saved by works at all
There is no such verse. Each time it is either works of law, or for reward, or for boast, or some such thing. There is no statement that would say that man is saved by faith alone (excpet in Luther's fraudulent "translation" of Romans). But there is a plain and bold statement that man is NOT saved by works alone.