I find a drill press is much easier to use than a hand drill. Basically just find a bit that’s about the size of the tub on the rivet. When you flip the ramp over look at the flange that’s created when the rivet was pressed, the tube should be a little larger than the dimple that’s created from pressing. Position the bit so that it’s in the center of the dimple. I would use cutting oil too to save your bit. You usually want your drill to operate at a lower speed. Keep a good handle on the ramp to since the bit can catch on the rivet and the torque from the drill can spin the whole ramp around. You’re really just trying to drill out the flange not the whole rivet. Go slowly, wear gloves and eye protection. You should be fine. It’s more tedious than difficult. Also, you’ll need to get some hardware to replace the rivets so you can put it all back together. Unless you want to press new rivets to make it look stock. I really wish they would have used screws in the first place.

I used museum putty to attach my scrolls. It holds pretty well and doesn’t leave a residue.

https://www.amazon.com/Quakehold-88111-Museum-Putty-Neutral/dp/B0002VA9NA/ref=mp_s_a_1_4

I really like the color DMD in my CV. It pairs really well with being down near the playfield. I also think changing the bulbs to LEDs make the bright colors in the playfield and inserts really pop. If you change the GIs and inserts I’d also recommend the LED OCD and GI OCD boards from herg One of the cooler aspect is of CV is all the dimming of the GIs. It’s hard to eliminate strobing of LEDs without the OCD boards.

I agree it looks great with incandescents too. I don't think you can go wrong either way (unless you start going bonkers with color LED bulbs). If you're putting in a Color DMD the LEDs on the DMD are going to be pretty bright. If you swap in LED bulbs I wouldn't use anything too bright. Just single SMD LEDs with warm or sunlight white. Cool white doesn't fit this game as well. You could use some color LEDs for the inserts but I'd keep most everything some shade of white.