posted this on the saiga boards and thought someone here could help.
got a used 20 a couple of weeks ago. started stripping for a conversion. decided to update the sights to the hk. all is good so far. well not....
went to remove the gas adjustment knob and puck. here's where it gets messy. i cannot budge the gas knob. forget just moving from 1 to 2. i have it clamped in a vise right now and have tried just about everything. i even drilled out the front bead thinking it was causing a bind. my last resort is a BFH!
i have tried break free down the tube for 48 hrs. still nothing.