When you are finished detecting, Get that lower rod in some water, then loosen and tighten each cam several times, to get that buildup of fine silt which accumulates in the tiniest places loose and out of the cam thread. Then, loosen the cams, and keep them loose until your next water hunt. This will allow you to still adjust the length of the rods after they dry. If you keep your rod extended and do not clean out that fine silt, it will accumulate and make it very difficult to fix. I always cringe when I hear someone suggest you use a tool on plastic lower rods, as they will leave dents and scratches, leaving even more places where that fine silt can accumulate and cause even more problems.