Update: It was a cluster, and thanks to everyone who replied in this thread!
So I purchased this Ni-cop, and I would strongly discourage anyone from buying this exact brand of Ni-cop or any cheap Ni-cop in general. (This was $70 so it wasn't cheap but the quality must have been off)
Link to O'Reilly's Ni-cop -->
https://www.oreillyauto.com/detail/...rake-line/ags2/cnc325?q=25ft+brake+line&pos=1
I got the Ni-cop, formed my line, then I cut off a few small pieces of the main roll to do some practice double flares on. I made 4, taking my time but all of them had a deformed exterior on the flare.
So I made 2 test flares out of the previous steel brake line (BH2201317A) I tried to install. Both came out perfect, no problem
Made 3 more test flares with the Ni-cop, all garbage again.
I googled Ni-cop flaring problems for a bit and I found other people having the same experience when trying to flare cheap Ni-cop from Amazon.
Went to the Autozone and bought a 51" piece ($9) of steel brake line that had the correct fitting on one end, but the wrong fitting on the other. Cut the line, put on the correct fitting on it and flared it perfectly on the first try.
Since I used the same exact method to cut, prep and flare all the test flares I'm guessing either A) That brand of Ni-cop is garbage or B) The Titan 51535 3/16 flair tool does not play nice with Ni-Cop
The truck is finally back in business and O'Reilly's agreed to take back the Ni-cop and refund the purchase so I'm happy... but this was a long drawn out process, frustrating to say the least.
Here are my test flares out of Ni-cop and Steel.. what say ye?
1. Poor quality Ni-cop
2. Titan 51535 doesn't like Ni-Cop
3. The cutting and tube prep was bad before flaring (which is possible but I prepped all flares in the same exact manner)
For the record I did use a tubing cutter for all my flares, the good ones in steel and the bad ones in ni-cop