Core credit is subject to inspection and acceptance by Kansas City Power Products.  All cores must be returned freight prepaid.  Core credit will be issued only on like and assembled engine cores.  The cores must not have visible holes in the block or head, and the crankshaft must be able to rotate two revolutions (720 degrees) and turn the internal parts.  Credits will be reduced or disallowed for non-operational damage such as fire, rust, handling or outside storage, with reductions for cores with broken, cracked or welded blocks, heads or crankshafts.  Used crankcase oil to be removed prior to core return.