I figured out a shortcut for this. I started putting it together and decided it would be easy to do if I could put the stops in later. The rrp blocks can only be mounted before the base of the pole is mounted. So I went to a local metal fab shop and got a piece of stainless keystock. They gave it to me for free, it was in their scrap pile. I cut, filed, drilled and tapped, and basically made 2 large nuts the same size as the rrp stops. I bought 2 stainless hex bolts to use in place of the Allen bolts, for easier tightening. I was able to hyper extend the pole base to put the spring in. I had both a stock and blowsion spring, so I swapped them back and forth, and settled with the stock. ( try that with the stops in!). After the pole bolt and spring was in, I put a little blue loctite on my new bolts and stuck them up through, and in to my new stops. I put the hoses in last, a little tight, but easier than fighting a spring and bolt under tension. It looks the same as the rrp stops except its not black like the rest of my pole mount. I didn't drill all the way through the blocks, so they are actually cleaner. Just 2 polished blocks in my mount. I don't know why rrp doesn't sell them this way! Did it with NO help.