904 differences

yeah I did this hole deal in a 10 by 20 garage with the front end held up by blocks under the frame rails and have been pulling it out into my gravel drive to tinker with the adjustments , it is leaking a tiny bit of oil at the back of the motor somewhere but I'm just going to refill what ever it loses on the road ,it did the same thing last year and it turned out to be the passenger side valve cover was leaking a little at the back corner where it wasn't visible but would drip on the header and smoke when the car was stopped , I'm hoping its that again but either way it's not stopping me now haha