I have a CP-214 and can sketch you drawings or pics of whatever you need. The Yolk bolts are a long shoulder bolt that goes the width of the two plates. There is only enough (fine) thread to hold the nut on and clamp the yolk.
The trigger is retained with a single screw that goes through the actuation arm.
From what I've read, most of the non CP squeezers are clones of the 214 and many/all of the parts interchange.