Hey all, for more power on my 200 CI for my 1965 Mustang I decided to bore out the cylinders to .030 put in the over sized pistons and rings. I also had the shop I took it too resurface the head, block and go through the valves. I installed Hastings 586030 piston rings, with the jims piston band compressor took following the instruction manual found in the Hastings instruction manual. Going to start the car it just wouldn't start. I then ran a compression test and saw the numbers where 150 across the board except for cylinder number 1 which was 125. I cranked over the car to try and get it started but when it wouldn't start I re ran my original compression test and saw that the compression dropped to 110 PSI on cylinder 1 while ever other cylinder remained about the same. Does any one have advice on what this may be?