As long as compression is in spec I wouldn't worry about bore limits if the thing doesn't rattle like a diesel.
For example YS recommends lower viscosity oils for the fuel injected ones so more oil will flow past the piston to the lower end.
Please don't let this wonder off into automobile or motorcycle land as these kinds of discussions sometimes do.
Not to disagree but the conversation is about two stroke gasoline engines , YS nitro four stroke recommendations are not relevant to the lubrication needs of a two stroke gasoline engine.