Dammit’s adventures in mountain biking

Yes, that’s what a chap at Tarty Bikes thinks. I’m open to having over-filled them, but I can’t spot where it happened in this process:

• Bike in stand, wheels off
  
• Rear calliper pads pushed back, pins out, pads out, spacers fitted, pins in
  
• Lever bleed port screw removed, syringe with hole in fitted
  
• Bike angled so rear calliper above lever, bleed screw removed, syringe fitted, bike back to normal angle
  
• System bled, pushing and pulling fluid through, brake lever operated to push fluid down from upper reservoir to lower as this releases air bubbles, smooth pulls and “pings”, bars moved through full range of motion as this is done as different angles free more bubbles
  
• Upper syringe removed, small amount of fluid dropped into bleed port, bleed screw fitted (doesn’t stop rotating, worryingly)
  
• Bike angled so rear calliper above lever, syringe removed, small amount of fluid dripped into bleed port, bleed screw re-fitted
  
• At this point I dicked around cleaning and lubing pistons for a while
  
• Piston spacers out, pads in, pins in, rear wheel refitted, lever operated a lot, leaks observed