So I managed to somehow side-step the issue I mentioned in the op.
But now I find myself stuck, as I REALLY need the Parallax to not screw me over by not working.
This time I added a layer named HUD, and put it at the top of the other layers.
When the Parallax is set to 100,100, I can see the health indicators.
Say I give them 99,99: Now the health indicators are several pixels below where I put them in the editor.
By 95,95 the health indicator is on the bottom edge of the screen, and anything below 95,95 makes it disappear off thes screen from below when I run the project.
I have no idea why this happens. If I give the HUD layer a property of 0,0 it should show up and stay there.
I had this exact same problem a while back, but I got around it. There is no easy way of getting around this, I need my HUD layer to be completely static, and following the action.
Please someone tell me what I'm doing wrong, or if it's a bug with the program.