What is the length of your bow? I was wondering if it was one of the short Kodiaks, which might be difficult to tune, particularly for someone with a 29” draw length.
Normally, your setup would call for a .500 spine shaft with a 125-150 grain point. However, .400 spine shafts with a heavier point and longer length might work. I would start tuning them full length, if I were you, and try 175 or 200 grain points. You want to be sure you're starting to tune with a true weak and not a false weak. Right now, your shaft is showing stiff for a LH shooter, but it is always nice to be able to find a true weak shaft and then back off from it a little.