Materials that you will need.
Grind down the surround and where the spider lays down to bear metal. Then clean the entire woofer so no shavings are on it.
A card and masking tape works the best for cleaning out the pole vent.
Be sure to test the coils on the recone to make sure they are what you need.
1.5 ohms all way round babe.
test fit the recone.
Lay a nice bead of CA glue on where the spiders lay.
Be sure to line up the terminal leads before you spray the activator.
Put the shim in place and place the recone on the pole vent and get it into place.
Seeing as the Warden has a very small gap. I had to use a piece of paper. Usually note cards are acceptable.
And make sure the shim went all the way through the coil so its not touching anywhere. Line up the coil so you can move your make shift shim up and down easily.