I've not experienced, but I've heard the same. The reason I went with the VX-5HD over the NX8 or AMG for my build was due to the 9.2 oz weight difference. On a rifle weighing only 7.5 lbs I was trying to minimize scope weight. If it has tracking issues I'll send it back for warranty and then sell it. Then I'll just accept a 9oz weight penalty and put on the NX8 (which I personally prefer to the AMG due to reticle).