I have an 86 Ram 50 with a 2.0L SOHC, I'm replacing the rings and shaft bearings and while honing the cylinder walls I noticed a scratch at the top portion of the #1 cylinder wall about an inch long. I cannot feel it with my fingertip, yet If I run my fingernail across it, I feel it.

Is this something to be concerned with? What can be done about it?