Winspace wheel truing

[ariw]

Been truing wheels for something like 30 years now, but this set seems to have me frustrated. Removed the tire and the rim tape so that I could access the nipples using the nut driver. Using a plastic tool to hold the bladed spoke to prevent twisting, yet still it doesn’t seem to be working.

Should I hold the spoke with the tool and loosen the nipple completely, then drop some or oil on the threads before re-tightening? Any other tips or tricks?

Ari