MADRID | By J.P. Marín Arrese | The ECB is frantically submitting to scrutiny up to 60% of risk-weighted assets from the 128 biggest banks in Europe. This step stands as its last chance to avoid inheriting former shortcomings and mismatches. When it takes over responsibility for supervision later on this year, it will be blamed for any financial blunder. No wonder it wants to ensure that no nasty surprise lies ahead.