I googled the part number, it shows to be a 67.5mm top end kit. I wouldn't consider it bad news. Unless it was a bought 240cc cylinder, it was just resleeved by who knows who. I'd rather have no engine work than engine work done by anyone in my area. A friend of mine had his CR250 engine sleeved earlier this year. They were 35 miles from the truck when engine died. When he tore it down he found the sleeve had spun and damaged the cylinder beyond being repaired. That was from the engine shop considered to be the best in our small town. I had a cylinder bored at a motorcycle race shop, who specializes in MX engine builds, they didn't bother with little things like chamfering the ports. One of the best things about this forum is that if someone does crap work or any kind of bad dealings, it will be known.