What type of ammunition are you using? A 6 port barrel is alot of porting for a 9mm. Generally people have to drop down recoil spring weight to 11-15 pounds. I personally recommend 11 lbs.
I would start with a SS guide rod and an 11 lb recoil spring and go from there.
I'll be addressing questions such as this on our new blog http://blog.lonewolfdist.com
If you have any more questions send them to Blog@LoneWolfDist.com
and I'll try to make it into a post.