What are you covered for now, general liability, inland marine (theft), truck liability. General liability is hard to find, as there is not much in it for the companies and normally large claims to pay. (Then you get dropped)
Try Farm Bureau or RISC (state wide) out of Dallas for general liability, Firemans Fund for inland Marine
$850.00 x 12 = $10,200?
$850.00 x 9 = $7650.00?