Murah, where did you get your figure of $120m a year, is that a random number? Amendment increased total net interest rates 400 basis points. On $3.1B that is $12.4M (not over $100M!). And the $100M was pre-paid debt.
In any case, if this is an example of the worst that can happen due to MTW's debt convenants I am moving on to other concerns.