Foot neuropathy or just additional Morton's neuroma problems?

75 year old male without any diabetes - I had decompression surgery for two instances of Morton's neuroma in my left foot a few years ago - I choose decompression over a neurectomy because of a quicker recovery and less potential for permanent numbness - it improved things for a while, but now I'm having some reduced numbness in the affected toes again, as well as pain in the rest of my left foot almost immediately anytime I walk barefoot - I've found that Crocs are the only type of shoes that are comfortable for me, and I've tried everything. I don't have any of the systemic conditions that are known to cause foot neuropothy. The several Podiatrists I've been examined by (second and third opinions), have all recommended some form of neurectomy - either a chemical neurectomy (sclerosing injections) or a surgical excision - I'm wondering if there's something else going on in my left foot that they're missing - any suggestions?