1. If credit is pulled by the mortgage company again then whatever info was on the CRA's at that point will also be on the mortgage companies credit report, for better or worse.
2. Not all mortgage companies pull credit again right before closing, I'd say less than 1/4 of them do. If they do pull credit again it would be right before docs are drawn up.
3. Docs need to be signed in order for the loan to fund, are you sure the loan is funded?
4. Reasonable interest rate would be determined by the details of the transaction in addition to your credit score. Debt ratio, loan-to-value (down payment in your case), and reserves all play a part in your interest rate.
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