I'm not a huge fan of tapered inserts
I had some really well machined ones that were tig welded into my knuckles to go from Heims back to TREs.
Eventually the knuckle cracked around the insert. Especially on a D30 knuckle you remove too much material imo.
I've also personally winched a rig back to camp that failed a pitman arm with one of those split adapters. Twisted it right out of the arm.
My vote is to ream the knuckles properly
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