Sounds like your front brakes are seized. Common fault with KA's. I had the same prob with my wife's KA. Striped out front pads & re-grease slides & pads. Take it back to garage & explain to them that your brakes are seizing up & ask them to repair them. Not an expensive job to fix, might be a good time to replace brake pads, as the old ones will have to come off anyway.
Here's another forum if you want to ask these guy's too:- http://www.myka.org/e107_plugins/forum/forum_viewforum.php?2
Free to register.
George
January 2008