A power generation plant has two internal combustion engines coupled in a compound configuration to operate electrical generators. Preferably, the ethylene\u03b1-olefin interpolymer has a MwMn from about 1. The torsion spring has an elastic force smaller than that of the elastic member. A configured offset information signal is generated from the information signal, wherein the spectrum of the configured offset information signal is offset from DC by a channel configuration offset, and is further offset by a negative of the spurious mitigation offset. The sealant is applied to the spacer body on line so that the sealant-laden spacer body may be applied to the glass without manually handling the sealant.