If you can accurately draw a center-line on the top of the fuse and continue that line out the front of the engine compartment, you can see if the engine shaft is along that line, or if it vears off to one side, or the other. To accurately measure the amount it is off would be difficult. I'd shoot for straight down the line, then add one washer to both the left hand side of the engine mount where it attaches to the firewall.