Hey Purdy,
Good information to keep in mind. That's what I wanted to know (potential damage). I'll not use any of the long shafts that I have. But , still am thinking on the OHV head useage, where a loong dist shaft seems unavoidable! I had a Cragar OHV that I had completely bulletproofed to run, and sadly had to sell...as hardtimes came calling! But, I still have a set of valves/springs (double) for such AND that long dist shaft. It does look like 'home made' , but well done. Not much to it as it is only 3/8" stock (?) with offset slots cut into ends. Thanks for sharing your experience/woes with long shaft useage
.