Picked up a Yz125 a couple weeks ago. Decided to take off the cylinder to see if the "4 hours on fresh rebuild" was true and it actually was. I was shocked. The piston still looks new. But anyway, the cylinder still has the cross hatching. If I throw a new ring on the piston, will I have to hone the cylinder just a little bit and be good, or just not hone it at all?