....remove your shoes! My safari has been acting erratic last 6 outings, with no rhyme or reason as to why it kept falsing. Every swing the threshold would either blank out or give me a tone in the 32 to 33 range. Drove me insane. So I was doing some troubleshooting and stood in one spot , feet planted firmly. Waved coil all around me at a distance, and no falsing or signals, solid threshold. It dawned on me that I have been wearing different sets of boots on the last 6 outings if one pair was wet, so it seems when I wear my workboots that have 10 pairs of metal eyelets it is enough for the stock safari coil to pick up with every forward step. Changed back to my other boots with nylon eyelets and problem gone. What a maroon.