I was wondering if anyone knew exactly what the grease fitting on the bellhousing for a SM465 lubricates. I have had this popping sound from that area for a couple of months, when I would push in the clutch pedal and let it out. It would come and go. Last night, I put about 2 and half pumps of grease and the sound it gone. What was grinding inside there? Any ideas or suggestions are appreciated. Thanks.