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Diamond Drive seeping oil onto clutches

About every 300 miles or so I have to wipe down the clutch compartment area due to a mist of oil residue on everything on the clutch side. I checked the seal at the input shaft and its good. Must be the main gasket? Anyone else having this issue?
 
Did you overfill the DD. It could be coming out of the vent(clutch bolt)
 
If the input shaft seal is good its probably coming from the vented bolt that holds secondary on as said ^^. Has the sled been on its side? after a roll-and-go to get unstuck the other day noticed oil was getting spun out around the vented bolt and was also on the back of the secondary. Oil on the clutches = day of riding over so i drilled and tapped a 1/8 hole in the top of the dd case and installed a barbed fitting and ran some hose up the steering post to vent the case better then blocked off the vent cut in the clutch bolt. so far no more oil on clutches or seals weeping due to excess pressure.
 
Thats where that oil has been coming from, always figured that slit in the clutch bolt was some kind of locking feature. Does the BDX DD have a different vent setup?
 
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