I received my bolt back from Bighorn after having the cocking piece modified. I tried the bolt with all my triggers (Huber 2 stage, Timney CE 1 stage, and Timney CE 2 stage) and now my Timney CE 2 stage actually functions.
Initially after installing the modified bolt and trigger, the firing pin would drop while closing the bolt sporadically, probably 2 out of the 50 or 60 times I cycled it. With some adjustment to the trigger, I think I was able to properly tune it, but will need to cycle the bolt a couple hundred times without issue before I'm confident it's properly set.
Additionally, I think the modification allowed for my Huber 2 stage to function better as well, the 1st stage pull seems to be more consistent than before.
Big thank you to Bighorn for the customer support and awesome service!
They aren't joking on their turn around time, they shipped my bolt back same day it was received.
Also just so happens my .260 AI PVA bbl showed up last week, I torqued it on to my action last night and hope to be fire forming my first 50 rds this weekend.
Build is now complete.