Caps for Redfield Revolution 4-12?

When I put flip up caps on mine the lady behind the gun counter looked up what I would need in a reference book from Butler Creek. I'm not sure if that is available online but the dealer you're buying from may have that book.
 
I grabbed the Eyepiece 1.605" 20140 and Objective 1.800" 30250.

Objective fits perfectly, the eyepiece is too loose.. I'm wondering if the 1.570" 20130 will be too small?
 
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