I think that you are more likely to get better responses by starting with principals. This means contacting heirs, beneficiaries and executors/administrators (personal representatives) directly and identifying the ones that are motivated to sell.
My experience us that probate attorneys, in particular, prefer to see their estate client list a given property prior to sale in order to give it maximum exposure to the market, presumably to reduce the risk if a disgruntled heir becoming dissatisfied with the sale price and terms.
This is not to say that it's impossible to buy starting with the attorney as the starting point, however you'll like continue to get the same response as in the past until you develop better business relationships with the BK and estate lawyers.
Early in my career I, before I discovered more fertile grounds (probate) I easily found BK attorneys eager to refer clients to me. However, I don't recall a single referral closing because they lacked equity. Of course, we're attempting o buy equity at a discounts. I suppose I could have become an expert at buying BK short sale properties, but that just seemed like there were too many moving parts and few rewards for the effort. I'm sure there are a few people out their laughing because they've unlocked that puzzle and will keep silent.