I had to fix my parking brakes on my gx 470 when i damaged them while taking off rotors (was siezed bad) Those pins/spring/locking plates were a pain to put on! Especially the back side/u-shaped pin. What i did was compressed the spring, then tie them with a couple fishing lines (one on each side) to keep them compressed. I also glued that locking plate on the spring to make it easier to put on. Once i got it on, i snipped the fishing line to release springs. The front wasnt as hard. Also, that special tool i had to make my own using a screwdriver and an angle grinder😂.
