On my Mirada, the chair and passenger seat interfered with each other. Neither the passenger seat or the barrel could be rotated or adjusted.
I looked at removong the seat, but I liked it. I also looked at relocating the pedistal toward the rear by 3 or 4 inches, but there were to many things on the punder the pedestal frame.
In the end, I removed the seat from the pedestal, then made a new mount plate that effectively moves the seat toward the rear by three inches. I removed the seat belt hardware as I don't think the seat mount is crash safe, and I prefer no one sits in it while traveling.
Moving chair aft to get it away from passenger seat | 2001 Coachmen Mirada 300QB