OE DG4 mirrors vs Reproduction

[ItWillBeSlow]

A few years ago I put a set of used reproduction "DG4 style" mirrors on my truck. I do not know the exact brand but assume they are the ones that LMC and others sell.

They have always been very shaky at any speed, particularly 15+ MPH. On the highway they are actually pretty useless and are almost a distraction. I am trying to determine what route to go with mirrors while I am restoring my truck (would prefer OE DG4), but wanted some more opinions on whether this "shakiness" is typical of all repro DG4 mirrors or if mine are extra junky.

See below for 2 pictures of mine, and a picture I stole from this forum that shows real DG4s without vibration. I don't know what speed this was taken at, but they're way better than mine. The minor bracket difference is a non-issue to me, I just want them stable.

Opinions??