I'm trying to use what I have just not sure if it's up to the task. I would like to use a 72 inch bar I'm not sure if the clutch is up to milling in hardwood i.e. Osage Orange ,maple oak. It has the 3 shoe instead of the 6 shoe of the 090. I would upgrade to the 66'll cylinder but the clutch is still the weak link.this is just for occasional use on wide stuff so speed is less of a factor than width of cut. If I can baby it through that works for me.the clutches are cheap ,the adapter sleeves are hard to come by. Do I need to replace them every time I remove it to change sprockets or the clutch?I'm thinking of getting a 3/8 bar with skip tooth milling chain with an 8 tooth rim sprocket. Any insights on this would be appreciated