CB125 Cylinder Leak

So even after finding a replacement dowel for the CB125 motor, it still is not up to par. In fact it seems worse now. I pulled and inspected the rings, reassembled and measured and they seemed fine and within specs but the cylinder is now showing a 12% (best reading) loss. That's about 3% worse than before. I can hear the hiss coming from the crankcase as the cylinder bleeds air. The only logical explanation is the piston and/or rings. Rather than screw around with it any longer I'm just going to have it bored .25mm over and go from there. I'm not even going reassemble it fully to do a compression test. On the upside the head seems fine and I guess I won't be needing those new valves I bought :-/

Well now I'm just confused...

I'm taking another stab at working the CB125's issues out.
Since I couldn't keep the cylinder at TDC for a leakdown test, I removed the tappet adjusters so the valves wouldn't engage at any point during the stroke. With the cylinder at BDC of both compression and exhaust stroke I got this:

85 out of 90psi is about a 10% loss

I'm showing less than 10% loss. I know this is totally acceptable in larger bikes, but I'm not so sure if this is good for this particular bike. I'm going to remove the carburetor and exhaust entirely and re-do the compression test. We shall see how it goes from there. If that turns out okay I'm completely stumped and I suppose I should re-check my timing? It was spot on when I last looked, maybe all that kick-starting changed something though...