Aluminum pillars are what you want to use. I make my own that are custom made for each application as there is no 'one size fits all' when it comes to pillars.
The Score High adjustable ones actually work pretty well...they give the DIY'er some adjustability for length. When the threaded inner adjuster is epoxied in place, they don't move.
I don't advise any direct contact between the pillars and the action. -Al
