I put a heat insert in mine and it's been great. You'll need to drill out a bigger hole and aim perfectly. You'll also need to use the thinnest inserts you can find. Most will be too thick. This set from Amazon is what I used, and it was really close.

Anything thinner than 8.7 will be good or better: 1/4-28 Thru-Threaded, 8.7mm OD, 12.7 mm Length