Well let me being with - moosehead - thank you again here.
Guys - I just got the factory rails mounted , I did it myself with a buddy, didn't drill anything, used factory bolts, used factory holes. Didn't even need silicone.
Let's see here.
Ok so , take off your stockers with an allen wrench
Look at those threaded holes... wow!
Now we realize the underside of the functional rails are locked into place with these two components on each side:
With that taken into consideration, I used the stock bolts and torque'd them down on each side almost all the way, then i slid the plastic oem rail "housings" over those to lock them into place. Here is how high I had the bolts from the roof
Then, I slid the actual stainless rails into position where all the rest of the bolts lined literally right up. I torqued those down - not even too hard. They are ROCK SOLID. I repeat, Rock SOLID. I could mount a box up there with no hesitation. So each side has I believe 6 of these bolts, just remember the outter most 2 are used to position these rails then the ones on the inside go through the actual rail. You need to have them side by side to really see this.
Am I concerned about water leaking into my car? No, not at all. Not even the slightest bit. There is NO WAY water is getting beyond any of these bolts - they are all down most if not all of the way. If you are paranoid, get silicone.
Am I concerned about weight limit? NOPE. Not at all.
Conclusion: get the OEM rails and bolt them up. At least that is what worked for me. The whole thing is rock solid. Anyone near Chicago want to see this in person feel free to reach out to me. Again, Moosehead - thanks for making this happen.