Katera flight wobble (slight fishtail)
 

Have an 08 Katera shooting 27.5" DL with 26.25" cx terminator lites in 45/60 with a 125gr head. I'm at approximately 67# DW. I recently went from a 3.0 cam to a 4.5 with new strings. I've tuned this thing for hours now and just cannot get rid of that wobble. I appears to be associated with my grip, but I didn't have this problem before. It's driving me nuts. Should I go to the 60/75 arrow?

https://www.carbonexpressarrows.com/...rrow_Guide.pdf

i know exactly what you are going through. yes go heavier and stiffer and it should tune easy. it took me 5 weeks to admit i could not shoot 400 spine, was fixing to sling the katera. switched to 340 today and tuned it in no time. bh and fp are together and before i couldnt keep in in a 6 in circle. i had lots of 5575 arrows and wanted to use them. it caused me to loose a lot of sleep. this thing shoots great now.

I agree, you are underspined, so long as you are tuned.... I just switched from 115 gr BH this year to 100 GR and did not even think about my spine. I bought a dozen 400 Easton epics (was shooting 500;s)and went out and thru darts again. Its amazing what little things make big differences.... No doubt under spined. Shoot thru paper and see the difference. Try a heavier arrow before buying as i did and it will tell you.