A couple of things to look at first:
How much lube did you use when shooting? These tend to want a lot more lube than AR15s during break in.
Can you take a picture of where the end of your gas tube sits relative to the cutout (up through the mag well)?
What is the size of your gas port? Many of these barrels (including Wilson Combat) have a small gas port causing it to be undergassed regardless of how much you open the gas block.
I hope your back is improving.
Post a picture of the feed ramps and chamber. It could be a tolerance stacking issue causing the misfeed. It could also be a magazine issue.
Welcome to the forum... officially. If you've been here a while, you may have seen that all of your interests have threads in here somewhere. Feel free to rekindle a neglected thread. The whiskey thread hasn't been active in a while.