I have a used k-star "70" kit. Its never been siezed or anything but it sat in a motor covered in oil for about a year. I haven even tried to clean it with gas. The ring moves freely in the ring land. I'd like 80 dollars shipped for this kit. The intake doesnt come with it but if you'd like a 15mm intake I have a brand new one I'll throw in for another 10 bucks.