In another post a couple guys said they loaded air in to the syringe to help push out the gear.
I have done this a couple times now with about .l ml air with no problems. Wondering if anyone else does this?

You would fill the syringe with gear, then suck in another .3 or less ml of air, invert so the air goes to the top, and pin the gear, using just enough extra air to push through all of the oil while leaving the excess air in the syringe.

Anyone else ever do this? It safe?

If done properly this method could save you 20-25% of gear if pinning ed