I've noticed when I lower the RPM's at certain times they will not go below 2500. I think this is just a visual glitches because I can tell by the EA6B that it goes lower than that. I will look down some time later and it will have dropped below 2500 to its correct position. I have only seen this happen in the 190-D. Not a big problem, but maybe someone could pull out the iron and take out some wrinkles sometime.
Edit: Should have went to Bug Reports, my bad.