By Bethany Wales Components manufacturer TT Electronics has downgraded its guidance as it struggles with “operational efficiency issues” at two of its North American sites, it said today. The London-listed company, which is headquartered in Woking, said it anticipated its revenue to be £15m to £20m lower in the six months ending December 30, 2024. In turn this is set to impact TT Electronics’s North American operating profit by between £13m to £18m, bringing its forecast group operating profit to £37m to £42m. It said the shortfall stemmed from delayed orders, previously scheduled for completi…