I received my Revolution Solo Pickup a few days ago & spent over an hour making a perfect fit. My bridge is set up for an Underwood. I was very meticulous and sanded it to 5mm using calipers. It comes at 7mm. I bought it from Upton Bass. When I spoke to Eric, he mentioned it was made thick enough to sand down to 'Underwood' thickness. Instructions say not to sand below 4mm. The sound I got was very natural & more centered than a Realist. I also preferred it to my Underwood, but it lacked the volume output for my needs. $35.00 includes shipping (priority, US only). Again: It has been sanded to 5mm. Guaranteed not to be hacked or DOA. I can email some pics. I'm just trying to cut my (GAS) losses. Otherwise, it'll end up in my string drawer.