[169indy]

One of the most important things to remember is the need to push in two planes; push inside the tip and at the flange at the same time.

Fashion a Tool as fancy as this brass custom tool or even machine or grind down a screwdriver so it performs in the same manner.

Use: Isopropyl alcohol, Silicone Spray lube or Dish-soap, something to lubricate the installation.

I think it also 'depends' which version of the fastener you have, I have seen very brittle plastic version -vs- a more rubbery flexible style,,,,