After calling numerous hardware store, autopart stores, tranny shops, performance (speed) shops, British car part companies, etc... I was beginning to get major headache. Decided to try some unconventional sources and looked in the yellow pages under aircraft part/ supply companies.

After 5th company, I hit jackpot. Flightcraft, located by Portland International, had what I was looking for; same size, same tabs, exact same as original, and only 85 cents each. It took around 45 phone calls total, but persistence paid off.