Blue Guides and Object Moving Error

[Erik in NJ]

I put five fretboards on a blank page and added about five guides near the top of the screen. I am seeing blue guides appear every now and then (a vertical one through the center of the page) which I believe are telling me when I have the fretboard in-line with the rest or centered on the page. Sometimes I cannot get it to display even if I have aligned the fretboard with another. Occaisionally I have seen a blue guide appear along the lower edge of my fretboard object--I have no idea what that represents--any ideas? I cannot seem to get the blue guide along the lower edge of an object to appear on a regular basis either.

The red and blue guide lines appear to be quite slow and kind of flicker in appearance as they are painted. Is there any way to get them to respond with less latency? One would think that the painting of the guide would be almost instantaneous.

When I move an object like a fretboard that is partially covered by another fretboard, depending where I move it to--sometimes it does not work and snaps back to its original place. I cannot get it to consistently not work, but I have seen it snap back many times.