When using fencing to create a block wall with Posts...how do I increase the panel size?

[DIYJon]

I've got a fence that I've made into a block wall by using Panels and Post to Rail.  I'm running into two challenges.

 

1.  When I drag the fence out, I want a specific length of fence with a post (pilaster) at each end.  It seems that CA takes over and inserts posts wherever it wants despite defining the "on center" value of the Newels/Balusters.  If I create a short length wall, it puts a post at each end.  But, when I get over a certain length (arbitrary), it puts a post centered in the middle of the fence and one on each end, and even further, it starts to evenly space them not according to the "on center" value, so I can't make a shorter wall with two posts beyond a specific length, which I haven't determined.

 

2.  I've been wrestling with CA regarding creating posts that are rectangular.  I created a rectangle polyline and that didn't work, then I created a rectangle 3D solid and that also doesn't work.  I was only able to convert the primitive to a symbol, and then when I try to select it for the Newels/Posts type, it's not listed in the user library as an option...so I'm confused about how to make that happen.

 

Any advice appreciated.  Thanks.

[DBCooper]

1. Chief uses the post spacing as a maximum distance between the posts and will then will always space the posts evenly.  You may be able to get what you want by specifying a large spacing and then adding break points to get the posts where you want.

 

2. Make your rectangular post using a solid (or some other 3d object) and then convert it into a "millwork" symbol.