Problems with the front axle (crossbar bush)

Hello, 1 Have my winter tires on it today, and since the start the steering wheel vegrates while braking. 2 front right I can move the Qeur handlebar back and forth. (so to the left and to the right) Now my question, can I only replace the bushings at the Qeur handlebar or rather the complete Qeur handlebar??? (have no workshop) How strong are they pressed in, or can you not do it yourself. Can the driving wheel get through this???? And should I use the cathedral bearings at the same time. or is it just a waste of time and money???? http://cgi.ebay.de/…4083QQQihZ016QQcategoryZ61892QQrdZ1QcmdZViewItemhttp://cgi.ebay.de/…9426QQihZ013QQcategoryZ61892QQrdZ1QcmdZViewItem http://cgi.ebay.de/…2721QQihZ008QQcategoryZ6192QQrdZ1QcmdZViewItem Can I take the ebay product, or is it all bad? (maybe one has already bought and built in) or should I take original product (don’t like to do it again in one year) And know by chance what the ebay product is, or is it all bad? stuff at the cost???? Only for comparison???? I think if I gave it all to you, it would have to be away from Bermsen. mfg