The head liner is missing on my Komatsu ised D39. Was wondering if it helps with noise which is not bad at all or if it was more for heat in the summer. Went out yesterday and reshimmed the blade , changed the oil etc getting ready to get after it some. One thing I've noticed , people either hate these or love them in comparison to others that size ( 850 Case , D5 , Deere 650) it seems to hold its own pretty well. I do think the 6bt would have been a better choice but it does have decent power. Looking for ins and outs from others.