Yes, they were a bit difficult but I have never been much of a quitter.
You just have to lift in one side of the insert into place first then the other side goes in. I held the insert in place with one hand and used a small flat head screwdriver on the other side to lift the prong up and into the slot.
Once I got the hang of it, they went in easily.
Now all of my Distress pads stay where I put them. I have already ordered 2 more of the Portainks organizer and the inserts too!
These work great for the PortaInk Organizer for all of my Tim Holtz ink pads.
I found them difficult to install... I had to "jam" them hard sometimes so they would click into place. I didn't find it to be a big deal because it didn't take long.
Use these with the storage tower to help the Distress Inks keep from sliding to the back (difficult to pull out). Some are hard to pop in place (and terrible to take out). Overall a must have purchase.