Suzuki 2 Strokes

I am in the process of rebuilding / renovating a 1971 TS250R.

On removing the carburetor, I have noticed that the spacer to cylinder head inlet is out of alignment by about 3mm. The spacer lines up with the carburetor OK.

I can't imagine that manufacturing tolerances when drilling/tapping the cylider head would be so poor to allow so much missalignment. Some 25mm into the cylinder head/barrel inlet there is the auto-lube injector, I'm thinking that the missalignment is there to induce some turbulence in the inlet and help in mixing the two stroke oil / petrol vapour.

Is there anybody out there with some knowledge of this? Have I got a problem that needs solving? Or is this how it should be?

All input will be greatfully received.

Frodo, those old engines weren't exactly "poster children" for modern manufacturing and/or tuning techniques. They did clean up their methods/designs later on, though.
If there is no evidence of bodgery by PO's, I'd leave it alone and ride it the way it is.