Was contacted by my dealer today informing me that there is a Service Bulletin on the L3302 and L3902. Appears on some tractors that they left a plug in the PCV vent hole. It was explained to me that the plug is to keep the hole open when the part goes to paint and some plugs weren’t removed. My dealer asked if they could come out and take a look and correct the issue if it exists. I offered to look for them and they are fine with that. Only problem is, my vent hole is on the backside where I can’t see. I’ll have to find my borescope. Anyway, attached is the bulletin if it applies to you.