one other oddity...the process for adjusting valves. Here's a pic of the left side of motor. The 2 lock nuts are loosened, the metal around it are both moved away from each other (left one front, right one back) until it meets resistance and then the metal grids are moved toward each other one half mark, which is equal to .010, or the correct valve adjustment.
Never seen anything like this. I haven't touched it, yet, but read about it in service manual and thought it looked very odd.
Has anyone had a motor with the same process for adjusting valves?