Well, howdit turn out homey ?
I'll say this, I can cook better, more tender, more moist, more predictable chicken in the WSM than my gas oven, what does "gas mark 6 mean ??"
anyway, after numerous attempts at producing tender moist chicken in the oven I took a hint from the WSM .. check the temp in the breast, when it gets to 70*C I shut the cooking down and foil it or otherwise hold its temp. In the oven, I sut the thing off, when BBQing I foil it.
You'll be happy, trust me.