Hi!My finger number 4 (and also 5 a bit) are stiff in the joints. I guess this is very common, but it disturbs me in my playing. When I play scales with fingers 1-2-3 it flows really good, but when the fourth and fifth fingers are included, it becomes more stiff and unflowing. I have problems to get up to the real speed because of this problem.Anyone who know how to make it better? Some technique practising or something?Best regardsDavid