Our 2006 GT200 (still under warranty) is in the Vespa dealer's shop because it is making a loud grinding noise upon acceleration. I have read through all the old posts here about this, but am not getting any satisfaction from the service department.
The tech in the shop is using the famous "cannot be duplicated" line. We explained that the problem starts after the bike has been ridden for a bit, and a 5 minute test drive probably isn't going to do it.
Any ideas on how to deal with the service department on this? The bike has been sitting there for two weeks now.