Isis Speartip Conversion Voting

So I converted the limited edition Isis Harbinger to have a cool short spear.  She's killed lots and lots  of foes with it...

 ...but, despite the excellent look of it, it often comes loose from the pin because it literally drags on the tabletop.

I've become tired of fixing it every few months and want to know if I should simply redo the pinjob with a longer pin and some additional precautions (not sure what) or switch the speartip out for a different model ad see how that fares?

 Here are the four options:
A- swordblade from a Tethru conversion (almost as long as the current speartip)
B- plastic GW speartip (slightly modified so it will be shorted and lighter than the original)
C- original speartip (with further modifications to help secure it better)
D- Horus hawk speartip (massive overhaul adding this different but shorter speartip)

I shall allow voting to go on until April 3rd and once the tally is complete my actions will be swift and just. That means I hope to have pics of the fix up by April 13. Thanks for your votes/opinions in advance.