I bought a slimstyle plus 400 sr tv stand, the scr...

I bought a slimstyle plus 400 sr tv stand, the screws provided were too long (not usable on my TV). Once the support is correctly and levelly mounted on the wall, as soon as I attach the TV (perfectly centered) the support hangs conspicuously to the left and does not seem to support the weight, despite being lower than the maximum capacity. Given the price, it's bad.