Not cool.. I did the same thing a few weeks ago and my wife heard me cussing all the way from the other end of the house. I was afraid of using any chemicals, so decided to use my acrylic scratch removal kit. Think I started with the 6,000 sandpaper and finished with the 12,000.. then polished it. You can't even tell and looks brand new now..
Good luck and hope this helps a little..
A quality hobby shop will have "UnCure" it is by Bob Smith Industries, it will remove the CA. I am not at all sure if it will etch the acrylic or not though.
Worst case, you would at least be closer to flush with the tank, then you can polish that away.
RC Heli days? Do tell. I flew RC Heli's for a number of years and owned and then sold an online and retail RC Heli shop called Zoom's Heli in So. Cal. I'm friends with most of the older pro guys like Todd Bennet, Jason Krause, the Szabo's and Curtis Youngblood. I still have a couple heli's even though I haven't flown in a few years.I still have half a bottle of Uncure back from my R/C plane n heli days, it's good stuff and was actually the first thing I thought of but chickened out.