Rodney had flown in to head over to Hobby with Bloke. We went through the briefing and then headed out to the airplanes. This was one of those "Aw Sh&t" moments. There was a puddle of hydraulic fluid under his rght landing gear. Bloke went on and Rodney and I put the airplane into the hangar to have a look. Turned out the oil seal on the brake was leaking. While we were at it we serviced the left wheel as well. This included replacing brake pads. So several hours later we were finished. What makes it a long process is removing the fairings from the wheels. Lots of little screws.