I spoke with QF and they suggested that I ship the carb back to them for a hourly rate to fix the screw hole due to the pricing of the thread repair kit.
But I would rather fix it myself and just buy the 12-28 kit myself in case of other future issues. I found a company that sells this size and I have ordered the repair kit.
QF said that they add a threaded insert and then they supply a hollow squirter screw with the repair.

Jim,
Thank you for posting the above. It seems that the kit you show is one of the only 12-28 kits available. I ordered one of those kits and I found that the repair kit comes with 10 threads (.32" long), insertion tool and tap. The 15/64" drill bit is not included. I did pay more for mine from another vendor, but it is better than purchasing a new main body for my carb ($220, OUCH).

Next week I will try and fix the front squirter thread. If that goes well, then I might just do the secondary squirter thread too.

Thanks