If your wastegate adjustment bolt broke off, it makes me wonder how. You would have to be pretty abusive to it to break it, I wonder what else was damaged. Make sure the turbo spins freely, look at the inducer on the compressor side to see if it is spinning. Make sure the wastegate valve is free to move, remove it and try to move it with your fingers. If you have let's say an 8 or 9 lb spring, it does not take a lot of effort to move by hand. And lastly make sure none of your piping came loose.