I'd like to avoid pulling the head if possible, because I need to keep the budget under control. If it has to get done though I'll do it. Though my preference is to wait until I can get my spare engine built down the road. Good topic for the next video and a member only Patreon post! Trying to avoid spending money twice.
The current plan is carbide. I don't believe I've touched the threads in the head at all on the previous attempt. So I've turned a drill guide that fits over the locating sleeve on the head, and picked up a couple 1/8" OD carbide burrs and bits. If I can get a good centered hole there's some hope I can get the EZ out removed and just remove the damn bolt and get back to re-assembly. If that doesn't work the next step is pulling the head. Going to give it a try either today or tomorrow.
Sounds like a GREAT thing, again, as a Patreon exclusive content piece.