Oh yeah. Happy Days are here. Front locking pin. What a pain in the ass.
Finally used my background in the study of Chi. Took a small flat head screw driver and put it through the two pin holes.
Then feeling super human strength. Plus the most pain in my thumb, I have ever felt in my life.
I pushed the spring and locking pin in, until I could hold it in place with the small screwdriver, coming in from the opposite side.
Then took the locking pin and slipped it slowly over the spring and small pin, while slowly withdrawing the screw driver.
SAAAAAAAAANap. In she went.
Wear safety glasses. Man that damn spring flies.