I have a 64' long barn that I'm going to build a feed bunk along. It's under an overhang. I don't have the resources for precast right now, and I have lots of 2" rough sawn lumber. I feed balage with a processor and bed over the top of the bunk, this barn is for weened calves (400-500#) to feed untill spring. Previously I had feeder panels, and getting the bedding through them was a pain and me and my wife are not getting any younger, also pushing up feed three times a day got old. So my biggest question is what should I use for the neck restraint? The posts are 6x6 so if I put boards on the inside and the neck restraint on the outside, is that enough of gap for this? Thanks