I have a sizable number of Western XPERT Mark 5 hulls. These are the old plastic hull with a quite high cardboard base wad. The base wad is so high I haven't found any modern wad that will fit. I have been loading them with 18 gr. Unique - one .150 nitro wad and one .370 fiber wad with good results. I am running out of the fiber wads but still have mucho nitro wads of varying sizes. Can I form the wad stack from the nitro cards instead of fiber? A stack of one .70 - and three .150 nitro cards would give the proper height. Workable idea or no way Jose !?