That is an absolutely great question Lynn. I think some tech advice from Bob would really help here.
First off, Bob should be able to tell us what spring diameter your 890 has.
Secondly, with that info in mind, you are now able to sort thru all the brands and styles of interest to you. After we find out the diameter, you can select pellets based first by weight. You would fare well to stay away from the lightest pellets as well. They can allow your spring to slam hard upon firing. Your spring should have at least a little resistance to push against.
If I am incorrect with anything here, someone please speak up.
I would say your Kodiaks are too heavy but won't know for sure until we get that number.
You can find some of this info in the Library, look under the spring section.
Also, I found more info on the Yellow Forum by Russ Best, another known tuner. A spring diameter of .128 using a pellet of 9.5 gr for any length of time can dramatically reduce spring life. He also states that this mostly affects .177.
I found this post dated March 27, 2007 Hope this helps.