To replace or not to replace, timing+balance blt tensioner

91 accord EX A/T, 120K, changing timing belt. Called the part dept. Of Honda dealer asking quotes for parts. They said no need to replace tensioners, does he know what he's talking about, b/c they do sell timing belt kits that includes those tensioner? Can they be adjusted w/out replacing?

from one of my experience with an 88 accord, carb, 218k the tensioner broke ( didn't replace it when the timing belt was replaced earlier).