Gentle Touch Photographics Thanks for all the suggestions. The closest to the answer was Sandor with the hole in the pressure plate for the databack. Thanks for all the great thoughts and comments.
Water is best.
But gold shines like fire blazing in the night, supreme of lordly wealth. I tried a roll of Kodak HIE in my 700si and the results were mixed. The rectangles are not visible in the denser frames. As you may know from previous postings, the 700si has two holes in the pressure plate which cause the IR film to underexpose in those areas. The result can be two underexposed rectangles on the negative and print.