Need a "Lender Policy" to protect my interest in a house I sold with owner Financing.

[Jeffrey Lacombe]

I sold my home with owner Financing and the buyers have let their policy lapse.  I cannot find a company to write a lenders policy.  The buyers were deeded the property and I have a security deed.  Does this allow me to take out a homeowners policy even though they have the warranty deed and I have a security deed?  I really want to get my interest protected ASAP!