Did you shake them and listen for slosh? Doesn't take much to keep the needles from seating. Had it happen twice to me over the years. First time I resoldered the seam, couple years later I just replaced them.
I didn't shake them, but I did take them off to clean the needle and seats and I couldn't hear anything moving around and they were very light so I'm almost positive that they are still good.
1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip,
(JA5) Silver Frost Metallic
1973 Challenger Rallye 340
1985 W150 Power Ram prospector
1986 Camaro IROC-Z 305 tpi
