Yes, that line / crease is the edge of the side plate that covers internal parts of the action. It is not recommended that you remove it unless you know how to do it properly. It's possible to damage the fit of the edges of the plate while removing it.
Yes the front to back movement is...
That sucks. I remember back a few years ago when Dublin was still running there was a limited range for the good stuff. something about the distribution area for different plants. When dublin lost their franchise I thought that would change. We still get the good DP just not from the dublin...
They still make the Dr Pepper with Imperial can sugar. Look in the grocery store for the 8oz bottles in a 6 pack. Look for the imperial sugar symbol on the bottles.
All you need is a really cold 8oz bottle, more than that it gets a bit too sweet.
Great Idea. I decided to see if I could find something similar. I did.
It's from this site.
Luminous Watch Hand Paint - Dial Luminescent Powder | Esslinger Watchmakers Tools
Kind of pricey per gram but may be worth a shot. One thing to look out for, especially way back when you did it...