My F8 has two long pieces of wood which rest on top of each side of the frame and serve as a spacer between the floor and the frame. (There are also two pieces, one for each side, which rest on top of the floor supports on each side of frame.)
Both of these long pieces end with a section milled out of them as if another piece "dove-tailed" under them and extended the length of the pieces. (See the pictures.) Any extension of these pieces would appear to possibly serve as a spacer between the wood plank that the gas tanks rest on. The original pieces end about 2 1/2" short of the first of a set of holes, which are 10 1/2" on center, drilled though the frame. I believe that these holes are concerned with affixing the straps that hold the gas tanks down to the plank. Is this assumption correct?
Is there an extension to these spacers? If so, how long are they? Any help on this question would be much appreciated?