The front (exhaust side) of the cylinder is scared. It's deep enough to see, and catch a fingernail on. I also burnt the cylinder on that side (not bad though). Could it just be bored and re-plated to stock bore? I'm looking for a cheap/good fix. I hope to switch to a Gas Gas in the fall, and don't want to sell somebody a bike with major problems, but don't want to sink too much money in it myself.
There's likely no need to sleeve. Most cylinders can be repaired and replated. It sounds like your cylinder is a good candidate for exactly that. Personally I'd rather buy a bike with a recoated cylinder than one that's had a sleeve pressing in. That's just me though I'm sure there are others that would prefer a sleeve, don't ask me why though?