cococola

I’ve got another problem with my new Mgf steptronic and wonder if you can help me please?
The car runs lovely except for every morning I drive down my road and as I go up a hill My Mg looses power as though there is a flat spot and I have to pull over, put the car into neutral and when I pull away everything is fine.
I do have a minor hunting when on tick over which is always there and the loss of power will not return until the following morning on the same route.
I have replaced my fuel filter and air filter.
The car did stand for a couple of years and was serviced before I purchased it and I have filled up fuel to 3quarters of a tank.
Apart from this issue and the steptronic noise, I love the car and I would love to fix these issues.