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Dimple suitability

STARGATE

I'm New Here
I dimpled and backriveted these 3-3 rivets, using the dies I purchased. They looked relatively smooth and flush, but I've recently seen an RV with rivets that don't seem to have as much of a radius ring around the rivet. Instead, the one I saw didn't seem to have any transition between rivet and flat skin.

Would any of the experienced folks care to weigh in on if the dimples look correct? I'm using a compression dimpler (for noise consideration), and I've already tried adjusting the ram to press harder. Thanks.
 

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Can we get a picture of your dimple dies? Those look deep to me. ( might just be the picture)
Who makes the dimple dies?
A
 
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Hard to tell without a larger group of dimples but I don't see a witness ring.

Hold the part up so you can see the reflection. Lines reflected in the surface like a garage door rail, should be straight with no distortion. Almost like a mirror. Distortion in the reflection means the surface isn't flat.
I'm a C-frame builder. Maybe someone will chime in with advise to adjust.
 
They are Clevealand Tool 426-3 dimple dies. I wiped off the smudges after I riveted. Here is an unriveted dimple, empty, and with a rivet sitting in it but not set.
 

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