I had something similar... but needless to say it was even more mental
I did my first test at brunters in the RST with the wheel banging off the caliper because it was flexing that much! It didn't stop me and I kept the foot in and recorded 149.9.
It was literally held on by 2 threads and there I was moments before trying to set acceleration and top speed times coming round the brunters bend FLAT
Could have been SOOO bad
Lesson learned!
RW