PistolPete,I had that trouble with the old style Grizzlies.I learned a trick from Ron at KME and that is to put the broadhead in a vice,chuck a long,steel adapter in a drill and run that in the ferrule.It should form the ferrule to fit.If you pound it in,you are likely to bend the adapter shank.I also don't use that adapter on arrows,in case the shank gets tweaked.
Those old Grizzlies had an unfinished bevel,like yours and it helped to put them on the belt sander to finish the bevel,before doing any serious sharpening.By all accounts,the Tuskers are good,tough broadheads but just need finished out,like the old Grizzly.
For my own use,I'd want to tanto that tip to prevent any curling.I like to mark a centerline there,before filing back the needle point.