I need some help. I have a 1971 Country Squire with a 400M married to a C6. Trying to get the motor jacked up a few inches to access the oil pan. Took out the 'through bolt' that ties the two motor mount pieces together, removed starter and took out the 'rear engine mount' which is really the mount for the tranny tailshaft. Jacked it up and the motor is stuck. So, I took off the 4 bolts holding the motor mounts to the motor itself and tried to jack it up. Still nothing. The only thing I have left is the 4 bolts holding the mounts onto the crossmember. Am I missing something? According to the manual, the motor should lift off the mounts but nothing. Anybody know what I'm doing wrong?