I have a slightly dinged up female end of the pto shaft on my brush hog. It goes on my male Tractor pto shaft but on locks into the first ring only. It gets jammed tight if I try to keep pushing it to the second lock ring. My options, without ordering a new one, are use the first ring, pound it on to the second or try to file out the female end even though I don’t see any obvious burrs. First choice is my preference and I figured why have that ring on there if you’re not supposed to use it but I wanted to ask people who know more than I do about this before I decide. Any help is appreciated. Thank you!