[Kevin Sevcik]

Since we seem to be trading horror stories in this thread, we haven't used many riv-nuts since the year we lost a match because a cross-threaded riv-nut spun and kept us from swapping our bumpers during a tight turn between matches. That and the fact it's difficult to get things to sit flush on top of (most) riv-nuts. The PEM nut fiasco on the old IFI sheet metal wheels has made me leery of those as well.