I recently ran into trouble trying to use a Toyo recessed 158mm lens board while also trying to utilized the Lee 6" long graduated neutral density filters because the filters are too long to situate inside the recessed area, as necessary, it just wasn't possible to use them.

Does anyone have a possible work-around for this, especially when using the 72mm or wider lenses (whereby switching to a flat board becomes less possible? - I know the 90mm may be able to use the flat lensboard to avoid this problem altogether.)

Thanks in advance for any suggestions.