Making Westone 4 Tip Adapter

How to easily make an adapter from the grey useless tips in the westone packaging to take larger bore tips. Find full tutorial in thread url=http://www.head-fi.org/t/527694/westone-4-appreciation-thread-and-reviews-a-k-a-westone-4/3375#post_8794572 (its page 226 of westone 4 appreciation thread)