I sprayed my HP trigger pin and associated assembly with CLP Break free and let it sit overnight.
The next day I removed the mag safety and taking the pins out was easy. I used a drift but only pressed the pins out with finger power, no hammer, no tapping, nothing.
They just slid out.
This was on an unfired 68 T series in blue.
They won't all be so easy, but the overnight soak with the CLP should make a difference on any of them.