Hi John,
I've been using your advice. The velocity increment on the THRU channel worked well, but there is a peculiar issue with the adjusting of level of the Melody track. On my system this level has a default of 10. If I change this to anything else and OK it then OK the the main preference, it doesn't make any difference at all and when I open up this preference I observe that the original default value of 10 is still set.

As always, I am especially grateful with the time you spend on your very illustrative graphics, you do this a lot and I know, at least for me, it takes such a lot of time.