The hard block is a last resort repair for a cracked block. It works about 60% of the time. I give that hole bout .0015 more skirt clearance. When doing this procedure you must reverse cool the system. I have NEVER completely filled an entire side of a block. I only encapsulate the cyl that's cracked. I would have your entire fuel system checked and IF the timing is correct have the rotor phasing checked as well.