Swords or pistols? :) If you want to go the dual weight route, you should be able to get any authorized Titleist dealer to order you some weights. You might even be able to find some aftermarket weights on the internet. Not much risk in something like that creating a problem with your club. Then you can experiment a little and see if it works for you.

Hi Dale,
I've been trying to resolve this same weight issue myself. I have a TSi 3 driver, cut it down 1/2", talked to the Titleist fitter at Roger Dunn, Santa Ana, Cory (Cory is great, btw, excellent fitter), and he confirmed it should go up 2 grams.
I checked the Titleist website, which confirms this. Roger Dunn said call Titleist, and Titleist said to call Roger Dunn. On top of that, special orders at Roger Dunn couldn't find a 2 gram weight to order. They're calling Titleist now to check.
If you/anyone knows of a place to order/buy the weights, or an aftermarket website, please let me know.
Thanks!
Eric

Search eBay and you will find a lot of them. Just need to figure out which weight you have and then factor +2 grams. You might even get a couple of different weights and experiment a little to see if the lighter or heavier gives you the feel you want. I actually have gone heavier in my driver and fairways as it helps me control the face a bit better throughout the swing. I just can't seem to feel where the clubhead is when I try ultralight clubs.

I ordered another weight for my tsi3 and I’ve found the extra weight great for my game, it could also be mental but after seeing cam had the dual weights I had to try it.