So my bike has 4000kms and I just finished an oil change. Also added a new chain and sprockets. Bike rides fine and sounds good, but after it warms up on a 5/3 min quick ride up and down the road. I see a medium amount of smoke coming from the lower backside of the engine for about 5 mins (temps in my area are around 15 degrees). smoke looks like its almost coming from the top of the cat or just in front of that. No leaks that I can find? even after sitting in the shed for 2/3 days, the floor is 100% clean under the bike. My thought was it could be some chain cleaner or brake cleaner pooled up in front of the swing arm burning off after sitting, but since it happened a second time I'm unsure. Would it be worth getting an OBD2 on the case or is that unlikely to detect anything? Thanks for any help!