Centerlink install - hard to turn wheel now

The center links do look to be symmetrical. Another member solved his issue ( Idler arm failures? I forget ) by switching the center link end for end.
I'm wondering why yours is marked GEAR at one end while majority of them have nothing more than number markings. I have one from a 73 model V8 Valiant and one from a 75 model \6 Valiant here and never saw "GEAR" marked on either of them. I will look again.
A tip to everyone reading here... Mark parts before you scatter them. The way I got this tip was "Write on the right" before pulling brake rotors. That little tip/method to the madness has served me well for a lot of years.