I just received my Bulgarian stock set from K-Var for may Sar-2.  Now, how the hell do I take off the lower forearm?  

Also, the Bulgarian buttstock has screw holes in the side instead of the top like the old wooden stock.  Should I just make two hole in the top or what?

And lastly, the upper forearm won't fit without a little bit of grinding at the lip of the tube going into the sight assembly.  I'm talking like 0.1mm here.  Tiny amount.  Will this hurt it in any way, and will it rust easily with the paint gone?  Any suggestions?

Thanks!

btt