see the checks but cannot feel them?

doing a check job on a usa 57' RI using the hot/cold shock job and there are visible check that look good but upon inspection they are only under the surface and cannot be felt?

The guitar is over 10 yrs old so curing is not a problem. I'm assuming the 57' RI guitars have a low Nitro content and do not compare to home job finishes that use SW,behlens,etc.

What are your thoughts? thanks

You got poly to check like that? Unless the 57 RI is nitro?

According to the fender site its nitrocellulose. I did quite a few checks on the front and back but cannot feel any of the cracks with my finger nail?

I have experienced this myself so I am intrigued. Anyone know the reasons or cause?

wow, no responses? Everyone must bedazzled and left stumped?

I did the same to my 2011 60th Anniversary P, and watched as the checks healed themselves. Literally. After about two minutes they just wiped off!!
Fender puts something in their nitro to keep it from checking, I'm guessing.

Have you tried rubbing shoe polish or something in the cracks?

I ran into the same thing. I found that leaving the body in the freezer longer ( 3 or 4 days) made more and better checks then I used shoe polish to make them show up better. My finish was nitro and very thin.