Do Trinitarians serve a different God than Jesus is serving in Heaven?

Jesus is high priest to his god currently. Is his god the triune god? If not, why do trinitarians have a different god than Jesus' "Only True God"? Does this not define 2 gods in their theology? For example... John 1:1 "In the beginning was the Logos, and the Logos was with the triune god and the Logos was the triune god....." Remember there is only 1 God. Its very simple. Ask yourself... Is my god the same as Jesus' god? If your god is not ONLY the person of the Father (like Paul's), but rather a 3 person being, wouldn't that mean there are 2 different gods being served? The triune god. And Jesus' god? I imagine Trinitarians will say their God is also the Father. But they can only claim 1 god. So is it the Father or the being? Which is the best answer between the 2? Y is defined as the complete composition of X,Z,and W. Y needs to be all 3. If we define Y (the Trinity) as being completely comprised of X (the Father), Z (the Son), and W (the Holy Spirit), then logically, if Y encompasses multiple distinct entities, it cannot ever equal just one of those entities (X). X can never equal Y. This leaves us with 2 different gods being served. How do Trinitarians get around this logical failure?