Get 'em tight! Other than that, I don't think it matters anymore about aligning your blades with your fletching. Too much offset/helical/etc.
I do know this....ANY little error in form will be magnified when shooting fixed-blade broadheads.
Lots of folks switch to mechanicals to compensate for poor form.
DON'T DO IT!
Get your form right...and consistent!
Have someone watch you shoot....or better yet,record yourself shooting. You'll learn a lot, and just maybe straighten' out those broadheads!

Now then....having said all that....spend $20 and experience the consistency of Magnus Stingers!

Good luck!