ACV - calcium deposits and stiffness

Firstly, i wish this forum was more active. There must be lots of acv success stories to be told.

I've read ACV can dissolve calcium deposits, i have them under my skin on my arms, and who know where else internally. I have hypo, so before Armour, i was not metabolising calcium properly. I first thought they were lipomas, but don't move and are painful to touch.
Anyone know how long this would take? Also i get stiff necks, and read to soak a cloth with acv and wrap around neck. I didn't fancy doing that, but had bad stiffness, and took ACV several times during the day and noticed stiffness was greatly decreased by the evening. Can this work that quick for stiffness, or am i falsely attributing acv for helping.

Thanks