I have the Powerlabs Plenum Spacer, have had it on for a while, was looking around the motor yesterday and noticed, at the rear of the plenum there is some oil, the area in between the battery and the plenum, my question is, is that fairly normal? I know the plenum has a lot of pass through with oil, and I have been wanting to get an oil catch can, but was curious if there is something else I should look for, I checked around the plenum and I seem to be getting pass through here and there, but I've had the spacer on for a long time now, so I dunno. Any help would be greatly appreciated.