As previously stated the best way to solve the problem is to get someone in the unit to redo the NCOER. That being the case you have a few options:
1). Identify the problem in a letter to the President of the board and explain you have made every effort to correct the problem.
2). Your gaining unit should have followed the following guidance
Q: What is a gap?
A: A gap is the period of a missing NCO-ER. EREC now process reports if there is a previous missing evaluation. The gap is not to cover a period of non-rated time, i.e., a previous unit fails to issue or generate a report. If a report is not generated the next unit will cover that period on their NCO-ER as non-rated time and include the appropriate non-rated code.
Hope this helps.
