I bought a used workman m400 knock off antenna,I have the directions for it,How long r the ground radials supposed to be?It appears that all three ground radials are two separate pieces you put together.I think that i am missing two of those pieces if that makes any senese.How long is the over all length of the ground radials supossed to be the instructions are of no help to me.I plan on making the other to ground radials that i am missing