Well, the other issue is that there is no visible representation for the tube light in the assembly room. It looks like a bulb light, and erroneously scales like a bulb light. It takes a little experimentation to figure out how the "tube" is oriented and where it begins and ends (when I first started working with them I kept a small plane primitive handy to catch the light). Flourescent bulbs are most convincing when they are a whitish-green color. Also good for trimming your artdeco diner with neon. ;-)