OK, first, if you think you can find a qualified and diligent attorney do agree to help you for free, by all means. I don't know of any like that, simply because they are typically not on salary and most of their pro bono is for those that are trying to prove they deserve their benefit, not trying to add a year they got jipped out of. That said, it seems you are missing 1 year and only 1 year. Doesn't make it RIGHT, but, if it is just one year, have you yet determined if the fight will even result in a change of benefit amount? Often1 year, if you were otherwise a hard worker for your lifetime, will have no noticeable inpact on AMOUNT. The exception would be if you never worked for 10 years, and you need those last 4 credits. So before you start spending money or signing contracts, and expending your valuable time and energy, give that a look.
I don't know when the 3/3/15 rule came in - but it isn't new. But, it is POSSIBLE that it is not the rule for proving you DID file, and producing proof of filing and paying those taxes, but is only the rule for FILING or AMENDING. And it is not the IRS, and so there are very different reasons for the rules.
I am willing to delve into this for you, at least for starters, but we have to avoid extraneous stuff. I understand you are upset and frustrated and feel there is tyrrany - I totally get that. But since I am not here to overthrow the gov't agency, that is simpy interfering with an accurate understanding of the facts, which I need to be extremely concise with no extra details not pertinent to the exact issue, OK?
I would also ask. If the 87 earnins was not on your annual earnings statement, why did you wait 20 years to dispute that? Or, was it one ONCE, and somehow removed?
So, I am not reading your whole essay above, but you can put it down into 5 concise sentences (or less) that would work. OK?