Lay it on the floor, drop a water bottle, rattle egg, drum stick, electronic tuner, tuning fork or whatever object on it and then bring it to Markus for top crack repair!
Important though: don't lower string tension or even take down the strings after the accident because he will have to do this anyway!
To be fair, things are getting better and I just finished a crack repair on a charango I received with the strings already taken off.
