I recently purchased a Cube Reaction SL e-bike (my first e-bike after many years of pedal bikes), and I have been frustrated with the latch/lock that holds the Bosch Power Tube 500 battery in place. The latch position can be adjusted slightly by loosening two bolts under the frame. My frustration is that after many attempts to adjust this latch, I can't get it right. In a position to hold the battery securely, means the the key release lock will not release the battery, by adjusting the latch a fraction of a millimetre , the key will turn and work, but the battery is not secure enough. At the moment, I have to release the battery by loosening the holding bolts, the key is now redundant. On removal of the battery and on closer inspection of the latch, I have also notice that the key cam will also jam in certain positions. Any help on this issue would be most appreciated. John