Sol322 - I tried calling Paul at PSB. All I got was an answering woman who sort of chcukled and said, "oh, he is not available" and the after asking about spike length said she "wasn't really sure" regarding my questions and put me on hold while she "went to ask someone". When she finally came back she siad, "the guy here says you can use spikes or cones, thanks for calling". In other wors, pretty much exactly what I knew before "dropping my dimes"!