Hi All. We have a Mits 500MSJ. One mold we run is very near the tonnage limit of the machine. We find we are hearing a loud creaking/snapping noise during the pack stage of injection. There is a slight noise again are the screw begins to reload. It seems loudest in the area of the nuts for the tie bars. Wondering this is a sign of a problem that should be addressed, or if it's just an inconvient side effect of running near the limit of the machine. Anyone have a similar experience, know what is happening, or have suggestions how to correct? Thanks.