Flew today in what had to be 2-3 mph , had good drive, winds stopped to soon.
Not really and improvement there. I fly mine in as little as 1-2 stock without the tail weight.
With 'good drive'?
I think the original Z flew better in low winds. I tried a new one a few weeks ago and it needed some wind, although it looked much better reinforced in the key wear areas than the one I had years ago.