Where to find?
Like my quest hammer but want more lbs.

I'll be honest with you it's time to buy another bow.
You could by the same model you have for $200 on ebay ( it different draw weight) vs trying to find parts for a bow that's not been made 4-6 years.   If it were a higher end Mathews or Hoyt etc you may find some parts but your only shot is calling the manufacturer or getting lucky on the classifieds.

Good luck