I don't think that the problem is with kiwi in your logs, it's the way the device is sending it. Possibly a newer updated MIB or something and I haven't worked directly with Cisco MIBs.
I also don't typically have parsing scripts on hand for things I don't have/use, so no, I don't have an example script to provide you. I could write one, but If you're logs are not consistently providing the same information, it's not going to be helpful.
To be honest, if you're logging to text file and then reviewing the text file, the parsing should probably be on that end rather than on kiwi. You already know what you're looking for and how to convert it. If you replace the values on the kiwi side then you're just going to end up with more . separated numbers in the middle of all of the rest. For example, if you know that 10.10.10.23 is the IP address you are looking for, what's the difference between searching for that and searching for <010><010><010><023> instead?