Have any other x320 owners thought about contacting Tuff Torq to see if the bottom plate of a k58 as used on the x360 be switched with the plate from the x320s transaxle to allow for a permeneant drain plug? Isn't the x360 fully serviceable? Aren't they the same transaxle? I think I will email them and see if it would work. I will let you all know what they say.