Hello together and first of all love thanks for the support and for the possibility here to present my problem. To me I am 55 and have screwdriver experience. I have restored cars and already aired the brakes on various vehicles. So not quite inexperienced at least as far as old vehicles are concerned. To my problem: I replaced the brake pads at the front of a two piston brake (two brake hoses on the caliper ) on my SYM Roller 300i from 2015 with 29 hp. Trying to ventilate on the old way has failed. Talk about pumping handles and turning them again at the bottom at times. Strangely, although I have only changed in the front, there is no pressure on the brake at the back. Second attempt with vacuum device even without success. I have read something about a brake distributor in the net. I know where this is. It is a scooter and it is very bad to reach and see. Well, now I’m a bit perplexed and need a hot tip.