Hello Lorraine,

Your PTH is to small
.  You have been fortunate so far that the hole may be on the large size.  It
would be better for the reliability if the PCB were solder coated; slightly
larger hole compensates for non uniform solder topology.  Using an .022 hole
it may not be solder coated (ie ENIG).  In this condition the pin edge, one
or two corners being more prevalent are scoring, plowing and fracturing their
way through the hole.  In a cross section it is not a pretty sight.  I have
done this intentionally in some configurations, it comes down to risk
management.  How long is this assembly projected to operate and what happens
if it fails.  If this assembly is going through temp cycling it will be
especially exposed to failure.
The issue with the design or designer may be pad size is to small already.
Enlarging the hole size may require a lot of work and this being the flew
season there may be a strain of "fundsarelow" that no one wants to be a
victim of.
Minimally call vendor and request largest hole size possible.

Good luck,
Boston Brad

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