I finished my build, all went well and now I have a minor problem. The screw at the 12 oclock postion at the front that reduces barrel whip will not screw down to barely touch the barrel. Man, after I backed off the set screw and attempted to adjust this screw, it got tighter than hell and liked about a little over a 1/16th to touch the barrel. I wonder why this is so damn tight? You would have thought you could adjust it, then tighten the set crew at the 3 oclock postion to lock the adjustment. Any ideas? Thank you in advance.