The scope of reconsideration is not confined to the issues in dispute. It consists
of reexamination of all evidence of record. In addition, we undertake development
if there is a reasonable basis to do so. Explore all leads for obtaining evidence.
If any presumption or tolerance was applied to the issue at dispute in the reconsideration
request, the field office must fully develop the issue. For example, the claims representative
used a match with VA records to determine VA income. The claimant alleges the VA computer
match is incorrect. The FO must fully develop the VA income in making the reconsideration