How can you get a higher wt. up front with out a super heavy wt. Broadhead? Is there brass inserts or do I need steel adapter?

Possum2;
Just received today my order from Three Rivers, If you use there updated inserts they have weights that screw into the back of the inserts. The adaptor is 10gr then the weights that screw into the adapter come in 5gr, 10gr, 30gr and 50gr. They are in the2010 catalog page 35.I just unpacked them haven't used thm yet, the 50 gr will fit inside the 2016's I ordered.  

Thanks just got my new catolog when i RECEIVED MY ORDER THE OTHER DAY!