now iv seen all the threads about having to narrow the mag inserts for the 3/4inch thick beads. i mounted 2 of the 42 PBRs, it was a bitch but i got em tight. seen guys with 44's that never narrowed em, and guys with 39s that "had to". so my question is i got em tight, they hold air, anything to worry about? is it bad for the bead to be squeezed down so tight? Id imagine its pretty hard to dick up that big bead. just want some input.

Sounds all good to me. Only concern with chit being super tight would be tearing the bead. But with that sucker at 3/4'', you can throw that concern out the window.

Bolt em up and get to wheelin!

You're good to go.