Trading in framing lumber in the US softened during last week, while the cuts in prices widened. Buyers held back amid expectations of a significant downside correction.  However, producers’ approaches varied, generating some differences in how traders saw the market unfolding heading into spring. Mills in the West were particularly aggressive in seeking out trading levels.  Producers in Western Canada were most prone to hold their quotes, citing an acute backlog of late shipments and little improvement in rail service.     Week Mar 16 Week Mar 9 Year ...