Thanks for the prod folks. For years I have said that I need to get as comfortable on my left side as my right side. It wasn't happening. Today I was inspired by your post Andy and did 16x100m of left side breathing in the pattern you suggested. The first couple of hundreds were rough and as I continued on they got smoother to the point where they were just about 1 sec slower than my right side breathing 25s.
The right side is still silkier but not by much. Will spend another five sessions on this.
Again thanks for the stimulus.
May we swim with ease at the speeds we choose.