If the ridge vent slot is cut too wide what can be done?

Here are some tips to try to fix a ridge vent slot cut that is too wide.

Remove the cap shingles. Remove the ridge vent. Remove the sheet of plywood (or an appropriate section) that contains the slot cut. Buy a sheet of plywood and cut the wood to the necessary width in the full length of the sheet. Fasten it to the rafters. Apply underlayment as needed. Note: The cap shingles may be salvageable but the ridge vent is not.