Once you have removed the old M spring roller

The 84-001 with the nylon roller or the 84-031 with the steel roller . However, which roller do you have in your door? That will determine which roller you need to use regardless of the difficulty of replacing it.

I also had some trouble installing the 84-006 with the pin. I did drill a little larger hole to help clean out the hole & install the pin (Try a 1/8" drill bit). However be careful not to damage the screen wire. I drilled a hole on the edge of the door, into the wheel cut out.That way you shouldn't damage the screen wire. You might need a longer drill bit. Don't forget! Safety First when working with power tools. Wear goggles and gloves and take your time. If something doesn't look right while you're doing it, take pictures and reply to this discussion with them. We'll see how we can help and we can use your pictures to help answer further questions on this.

What I do is turn the adjustment screw into the door just a little. Look inside the cut out of the door where the wheel goes into the door. You just want that screw tip exposed about 1/8" to 1/4" that way when you slide in the roller spring; it will have enough play to go over the screw end, but will catch the hole in the end of the spring. I use a flat tip screw driver to help push the spring into the cut out of the door.

Please also refer to our guide on how to install a patio screen sliding door: