I have a 7.62x39 build with D&H mags. I have had no problems with magazine feed at all. There is a thread in the @MoriartiArmaments part of the forum.
I say build with confidence and shoot the crap out of it.
It's not that far from @mrmackc. Maybe he would like to meet us there. Saturday afternoon or Sunday are about the only time I would have that would make it worth the drive. Monday would be a stretch since I don't get done until noon.
You must include pictures of the actual item to be sold. That is the rule of the forum.
Also, you may want to edit your phone number to spell out some of the numbers or give it in PM only. You will likely get spam calls if you leave it as is.