What these guys said. Remember, poundage is just a number and what is necessary is not always what our testoterone level thinks.

Whether you can draw 70# easily is not an issue. It's just not necessary for anything you going to hunt here. Now it seems your bow may be being over-clocked. The increase in poundage is probably more than being offset by a reduction in efficiency due to internal friction and other things. So now you may be just drawing excess poundage for naught.