Kymco Spacer 50 Drum brake Almost without function.

Good afternoon, dear forums municipality. I changed the drum brakebacks at my Kymco Spacer 50 ccm year of construction ca 2000 and ca 21800 km. Brake set that when pulling about 2 fingers space has reached for the handlebar. Wheel also well braked Bumped Then carefully the brake pulled when driving, this let itself now pull further and hardly brake effect better than Voher (coverings glazed) but still leaves me to wish for now now since you should go how far ic h position them still tighter? or can it have another cause The gag that triggers the brake goes quite smoothly. and also back in 0 position