Agree on the bottlecap reject. You'll lose depth if you use too much but it sure helps White's "honest audio" when it comes to an iron-rich environment. You may ask "what is too much?". I don't know. Start off with maybe 3 or 4 then go down until you trust your ears, VDI, & Spectragraph to indicate iron. Experience will teach you what to listen for. Just remember that the XLT doesn't force you to rely on your ears alone!Sarge out.