Kalun, I am looking at the quick ratio mustang racks, which are 3.5 turns rack to rack. . They are hard to come by and as a result am looking at the Flaming River units. Why did you choose the 240. I have seen them listed on ebay fairly cheap. Most of the power units I have seen use the < 3 turns if memory serves. Is yours a power unit without the booster? How "heavy" is the turning?
Bill