Larry Cole says: March 25, 2016 at 2:00 pm I need to review the calculation on a variable rate mortgage tied to the 1-year constant maturity Treasury. The mortgage is a 2/28 FHA originated in 2006, earns interest in arrears and is on a 360/30 day base. Some payments have been made past the due date and some payments different from the contractual payments were made. Based on my review several of the payment changes were not made or were made incorrectly. Do you have a product that can be used to calculate an amortization of a loan with these characteristics for comparison to the data record? If so, please tell me which product.