RMD calculation

My RMD calculation was reported as “0” for years because I didn’t understand. I found out how to configure RMD but there is no specific line for RMD on the 1040-X. TT should have picked up “my mistake” on their audit but nothing for four (4) years. My 1099R forms clearly show we spent twice our RMD amount so there is no penalty. Why not have the software calculate the RMD based on the 1099R input? I could download the 1040-x form for each year and mail amendments. Any suggestions? Thanks.

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