This pack seems fairly new, so there are not many other customer reviews of it that I have found online. I have seen one or two mentions that it can be a little tricky to ensure it is fully locked into the mounting bracket (i.e., you can turn the key and it can seem like it locked, but if you pull on the battery, or go over a bump, it can pop out). Have you noticed this? Would you consider it a problem, or just something to be aware of? I am considering this pack for a BBS02 kit build as the standard shark pack doesn't look like it would fit my frame without drilling additional holes, which I'd rather avoid (although you said you had to drill extra holes even for the carbon shark). I've been making cardboard cutouts based on the schematic images at Luna's web site to try to test out the fit before purchasing.
Also, Luna says the carbon shark has a physical on/off switch on the battery, but none of their pictures show it (the original shark didn't have a switch, which could
cause problems with it shutting down due to sparks when connecting to the mounting bracket). Can you confirm where it's located?