I'm working on the horn sleds, presently, and wondered if there is any reason to try to adhere to the same dimensions regarding the mounting baffle as, say, the Model 19, Valencia, etc.? There shouldn't be any consideration for baffle step, correct?

My question stems from the type of and size of wood I am considering for the frame that mounts the horn. I made some 1" x 2" (nominal) pieces from spalted Maple and would like to use them for the mounting frame. Using these smallish pieces would leave little excess around the perimeter of the horn mouth, perhaps 1' or so extending beyond the horn's flange.