The debt load, when we enter a stock typically cannot be above 50% of its market cap. Ideally, it's 33% (1/3rd) of their market cap or less.
If it rises above that level as we're holding it, though, we don't sell. Why? The debt load is a long-term problem that has to be fixed, and we're typically holding stocks for 2-4 years on average, which typically doesn't allow its debt-load problem to "come home to roost" within our holding period.