Took bike for a good long ride today in very hot weather to test out recent addition/replacement of heat shielding and subtle re-positioning of various items under the fuel tank to avoid radiant heat. My low RPM cough is now virtually gone, and I am happy with the results of this fiddling. My bike has always run like a top for 3 seasons and then was not very happy in summers. Now the bike is perfectly ride-able even in stop and go traffic in the heat. OK, I do still have a very slight stumble between 2-3K RPM but I have always had it and it is 2nd nature to me to compensate for it after 50K miles on this thing.
(edited typo in stated mileage)