Oh dear, what a mess. Stuipid bit is a proper set of disks for the comstars and sell the 550 ones would have been cheaper then killing 2 good disks. Might be possible to get those centers repaired, but given they are safely critical, I personally would be not that keen to try, better replace and have peace of mind. Having seen that I am in no doubt you are absolutely right to go through that bike carefully. Sometimes ignorance can be the most dangerous tool in the box.
