I just purchased some caps for an A3S that I am restoring. Trap Caps 052148 $ 1.25 each Boom Caps 050046 $ .25 each Element Caps 050053 $ .25 each I did not know the part numbers so I left my phone number on the voice mail on Monday. I received a return call on Tuesday - ordered the parts and they arrived Friday. My opinon - EXCELLENT SERVICE Hope you can say the same - Bruce - N1LN