So first practice and after some dodgy first few laps I realised something was wrong.
Changed driving position slightly and ended up with a 1'51.7xx which is not too shabby but there's loads to come out. Quite tired so that doesn't help.
Also when I got in my car it was down to 115bhp and it took me a while to realise the oil had gone bad.
So quite a few laps of last weeks race race were done with an underpowered car. Which would help explain why I was struggling so much, in combination with my worn tyres.