Review on ECHOGEAR Full Motion Mount Built by Linda Salinas

I bought the original version a few years ago and am very happy with it. However, I bought a newer version - I have a 40" screen that weighs just over 10lbs. Bracket on the back of the screen. The screen keeps tilting. the part of the mount where you can choose your angle is actually plastic (orange/red in the photo) no matter how tight you screw the pen in, the mount always slips after a few hours because plastic and metal are slippery too tightening with a screwdriver to the limit of bending of metal or plastic, so as not to damage the integrity of the fastener. Replace the plastic C/ABS part with a metal part, possibly with a grip/pull out definition to be able to lock in position. I've tried changing the top and bottom position of the screen to balance the weight but that doesn't work. nothing good. Very disappointed.