If you have not found it yet, everything you need to know:
http://forum.saiga-12.com/index.php?/forum/2-saiga-12/
If it is an RAA gun there is/was at one time a warranty service for the ports issue
You might try backing out the gas plug a turn or two and see if that helps
It may need...
Gravity bleeding. I thought it was BS before I tried it. I used to use a vacuum system or pressure bleeder. I was without a choice one day after replacing a caliper so I tried it. I just opened the bleed screw, filled up the reservoir, grabbed a beer and watched. Worked every time I have done...
Be careful with Tankers. The first Garand I bought was a tanker. I did not know it at the time, but the original tankers sold to the public were made with welded demilled receivers and sometimes two grove 03 barrels that were welded onto demilled Garand barrels.
I am one of the lucky ones I...