plus one with the boys..at 75/80 to one any load or revs would be a concern..there would be hardly any lubrication..if you looked at a chart of how the oil is fed into the motor from idle 120/1..thru to 50/1 it jumps to 50/1 by the time your doing 2000revs and stays at that for full rev range.....picking a halfway point between mix levels is suicide for that motor...im surprised it hasn't gone bang already...rick