LME nickel maintains strong fundamentals but market talk of large stock deliveries could mean it's "time to get out, the market is starting to look overdone," says a trader. More complex nickel production than aluminum or copper means "taps can't be as easily turned on or off," though China importing large amount of low-grade nickel to make pig iron could take heat off nickel in medium term, he says. LME 3-month nickel last trades at $42,800/ton, down $45 vs Thursday PM kerb.