Anyone else had trouble with using gasser (350) motor mounts with the 6.2? Tried to mount mine last weekend and they wouldn't quite fit. Driver's side went into place, but that leaves the pass. side about 1/2" off. Almost like the mount needs to slide "up" on the frame (as in vertically). Otherwise, just can't get it aligned to where the bolt will go through. Part number is different for the '91 Suburban that the motor came out of, but doesn't look like it would mount to the frame correctly. Plus, I just bought the poly inserts instead of the entire clamshell so I'm reusing the stock '87 (305) brackets. Do I just need to forcibly coax this mount in place, or am I missing something? I will post a pic this evening when I get all pics from the weekend uploaded.