typical sign of TCs being too short. you need the 22s that folk are talking of. you can put an eccentric post on 22s and get 23s and I hear the factory are working with 24s!
I would suggest that this is going in the wrong direction with the tail heavy Bergs. This would tend to make the steering even 'twitchier' than normal plus also put more weight at the rear, which is not a good thing.