I used the correct sized Allen key on my American deluxe Strat but I think the key itself is slightly worn. I struggled to get a hold of the nut to tighten. I have ordered a new fender Allen key and will try again once that gets here. I am confident that I could loosen the nut and hopefully with the new Allen key can still tighten.
If that doesn’t fit correctly, I suspect I might have stripped the nut slightly. If it can be still loosened, is it a big job to replace the truss rod? I know the walnut plug would have to come out? What else is involved ? What would be the ball park price for those involved in guitar tech.
If that doesn’t fit correctly, I suspect I might have stripped the nut slightly. If it can be still loosened, is it a big job to replace the truss rod? I know the walnut plug would have to come out? What else is involved ? What would be the ball park price for those involved in guitar tech.