At risk of sounding like a weakling...

I just got a C3 which is a CAI (i know...) G3 clone made using portuguese parts. The charging handle is incredibly inconsistent in how difficult it is to pull back. I can always get the handle to swing out and disengage the rollers, however sometimes it's impossible to pull back. I'll pull down with a ton of force from both of my arms and it wont' budge at all... but then I'll jiggle it around and I can easily pull it back with one arm.

It feels like the circular part of the charging handle that resides inside of the spring tube gets wedged and refuses to move sometimes, but if I can shift it it will unwedge and move freely. Is there any way to resolve this or do I simply need to break in the rifle and hope it resolves itself? I'm just unsure as to whether this is normal or not because all of the posts I see on boomer forums and even reddit say "drink milk" "work on your arms" etc.