it is setup for all cans with proper shimming and rods. These are actual jams. The cans appear to begin their final drop and then it appears the motors reverse, pinching the cans 20% up from the bottom of the can, laying on its side. All jammed columns do the exact same thing and it always begins at column 2 or 3 and includes 4,5,6,&7 columns. I've verified the columns are being loaded correctly.
When replacing the board, all connectors seem securely connected. I have not yet verified power at the motors, but I am always able to run 30-40 successful test vends before leaving the location.
I have confirmed there are power surges at the location recently.