Outserts?

[Dudley]

I have increased my draw length with my new bow. I need a longer arrow now and Id like to add weight/foc. Instead of buying new arrows, Id like to find something that will screw into the existing inserts and allow the broadhead to screw into the other end. I see Swat makes a 25 gr. spacer that fits between the insert and the broadhead, but Id like something that is threaded to provide more strength. Is there such an animal? Id like to go up 25-50 gr and add 1/2" or so in length. If so, companies that you would recommend?
Thanks

[Low Fence]

I’m sure someone makes it, but the more connection points the weaker the system gets... fast. All the foc, mass, single, double triple bevel in the world goes nil and void when the arrow breaks from the point

Arrows going past rest, or just past where they were before adjustment?

[Dudley]

Not going past the rest, but its awful close.