Jady,
As you Know I replaced most on my F14 resto and it was a bit of a mission to find them all,
Most suppliers have some but not all that I required anyways, and some seemed just plain unobtainium.
a few old ones went back in in less obvious places..
Replacing the clear ones makes a massive difference to the look of the Pf when lit especially with leds under...
In the pic the clear Arrows,
I had to remove the abaze 3 led 44s and replace with singles, Mates complaining they couldn't see the ball
I also tried CPR they get their own made, were reluctant to sell me any.....
http://www.illinoispinball.com/oscommerce/took ages to receive but a tip from MarkC initally allowed me to purchase some F14 specific inserts from these guys..He knew they had them...
Peter..