I just ordered some .65 wire, should pull in the groove tighter.
The safety wire on the wheel axle nuts, oil plugs, brake hardware, rad cap,etc is not to hold them tight. It is not used as a lock washer or locking agent.
The purpose of safety wire is to prevent a loose component from falling off.
Rules require the wire.
A properly wired oil plug or brake caliper bolt might loosen but will not back out.
The cause of the loose bolt or plug rarely is the bolt or plug, but rather "tool operator error".
Most will not admit it.
I lost the rear axle nut,and adjuster during a practice stint on my motard.
I had changed the rear sprocket the day before.
Tech did not catch the missing wire.
I had not tightened the nut sufficiently or wired it.
I made my practice laps without incident, but when I did a practice start the chain jumped a few teeth and I knew something was wrong. Eased back to the the pit and there it was, or wasn't.
Raced a backup bike.
Safety wire on the master link is a whole different deal.