Heat is always the enemy. I remember back in the day, when I was runnin' with some pretty lawless ol' boys down on the East Coast, the quest for HP was as prevalent then, as it is now, just on a different scale. And I know, there's a great gulf fixed between the mechanical V-Twins of old, and Hi-Tech, computerized V-Twins of today. There were certain Engine mods, I learned from my heroes of that time in my life. Jeez, lookin' back, I sure had some crazy a$$ed heroes. I don't remember all the build details as to Cam and Heads, but I do remember S&S and SU and Mikuni Carburetors, Belt Primarys, .60 over Piston in front cyl, and .10 over in rear cyl., and 60W Motor Oil. Ah, the memories. But I guess the best, and most simple advice I got was from a guy named "Yogi", that I still try to stick to today. I can hear his voice right now, "eez ol' girls is air-cooled man, so they need air. Stay outta' town, and keep her in the breeze. She'll run forever." Wish it was that simple today. Later--HUBBARD