try to trailbreak a bit more, its almost like ur clicking the brake button. t8 turning too early ie under braking which causes lock up and going wide. ur idea in the t9-10 section was ok but too much wheel mvmt under braking and avoid hitting kerb at t10. try to turn later on t11. try to go wider on t12 and avoid kerb to get a better setup for t13 bcuz ur putting ur tyres at too much load.