Problem with spring loaded bayonnet clasps

Interested in your feedback and experience. I have been using
stainless steel neck wires with spring loaded bayonnet clasps, 12
strand, with the pendants I wholesale. I have found that some stores,
mainly ones with older clientele, have problems with these. I really
don’t want to change to another wire or chain, I really like the look
of these. Maybe an 18 or 24 strand wire with a larger clasp would be
easier to use. If anyone has experienced this or uses the larger ones
without complaint I would like to know about it.

Thanks in advance,

B. Brooke Barer
www.bellebrookedesigns.net