Adjustable Gas Block? Brass Deflector?

[nhgunnut2]

After tuning it ,I'm liking my 12.5 but I have to remaining issues to resolve .
The first is as a lefty I am occasionally catching brass in the neck. Since I like to tinker, I am cutting cardboard as a pattern to fab up a deflector.
Second Issue ,is that when running a suppressor it gets gassy. So I have 2 questions. First has anyone developed a a mean of adjusting gas flow ? Second question, does anyone who has built a clone , have a wolf gas block they would like to sell? I have some ideas about modifying it ,to be adjustable.