Get some mineral oil. - Halfords stuff will do, pretty much the same as 'Magura Royal Blood' without the fancy label. Fill the syringe up with it, with the bleeding hose attached to it (barbed end in one side, syringe on the other) and attach that to the bleeding cylinder. -Obviously take the 5mm bolt out first. Once you've done that, get your 3mm(?) allen key, and take out the bleed bolt in the lever. Unwind the TPA! Then just pump the oil through, until you're happy that there's no air in there. Then slowly pump it, and put the bleed bolt back in. Then undo the syringe from the cylinder, and drip a bit of oil ontop. - Don't worry, with the bleed bolt done up in thr lever, it'll cause a vacuum, so all the oil will be held in, and no air can get in there. Drip a bit of oil on the cylinder hole, and do the bolt back up. You should be sorted.