[Hotfingrs]

Jeff that might work, but when you're running a big number cam and have it advanced x number of degrees, it makes it hard to find tdc. This spring when I changed valve springs using compressed air to hold the valves up, I could barely find tdc, there was such a fine line between one of the valves being open and both closed, that on every cylinder I had to rock the engine back and forth to find that spot. I've used the system that I describe in a post above, and also posted by Andy, for years with great success......