Correct size for Genesis levels is 512x160, right?
You're just a hair off--it's actually 511x160.
Alright, thanks.
One thing I notice is that the VGASPEC image for Taxing 15 is 510 pixels wide; so which side of the level has the empty column?
The empty column is on the left side.
Awesome; that means that the positions I'm currently using are correct. (Not that moving them one pixel would've been a major task)