If there is actual play even after replacing the bearings, you need to make sure your pivot bolts are all done up properly, no washers have been missed, etc.
All bikes will flex somewhat if you're applying force to them in a way that doesn't normally occur. We've all stomped on one pedal and noted how much the bottom bracket sways. On the bike, you'll NEVER be applying force like that.
Is the side flex you're experiencing happening whilst riding, or when pushing on it in your garage?
If there is actual play even after replacing the bearings, you need to make sure your pivot bolts are all done up properly, no washers have been missed, etc.
All bikes will flex somewhat if you're applying force to them in a way that doesn't normally occur. We've all stomped on one pedal and noted how much the bottom bracket sways. On the bike, you'll NEVER be applying force like that.
Is the side flex you're experiencing happening whilst riding, or when pushing on it in your garage?
Yes, I can feel it when riding, a feeling like it the wheel was flexing in a weird way.