Mikey you answered a question I have had for quite awhile. I bought a Romanian AK about 3 years ago with the side mounted scope mount. I wanted to mount a scope and found it was hard to find the right setup, sometimes I would see an expensive one at the gun shows intended more for a Mosin bolt action rifle, or dig around on the internet.
Then I spend the money and put a receiver cover type mount on my SKS. The 2 mounting screws shook loose, and half the people I talked to had similar problems, others did not. I put blue locktite on the screws and was ready to go back to the range, but the cheap rings that came with it stripped out really easy, affecting the adjustment for eye distance, etc., about that time I decided to trade the SKS off for other reasons anyways. So, I never did get the scope to work right :oops:
In a nutshell, these SKS and AK rifles don't seem to be good for mounting a scope on them. The difficulty of even finding one for my Romanian AK suggested a big problem as no one was selling them, and I did witness a fellow at the range who was angry with the top receiver type scope mount setup on his AK changing its zero frequently. He was trying not to swear too much! :cry:
Thanks for the info on the side mount rail mounts not being stable.