Trills, Ornaments - what exercises do you use (if any), and how do you train to use fingers 3-4-5? Personally I avoid using those fingers but have never trained myself (or students) to use 3-4-5, how do you do it?
My sense is that it is not a matter of strength, but co-ordination, never the less they have remained weak and I always avoid using then. 1 or 2 plus 3-4 or 5 is not a problem...
I'm guessing others have this issue, and with students, how did you train yourself/students to over come this?