>>2041376>0.25Yeah he's either retarded or having you on. .25% is fucking nothing.
Usually I'll leave my chains til either 1% or if they snap. Then ((IF)) the new chain skips on the cassette replace that. Never had to swap out jockey wheels or chainsets or anything, the units typically fail somewhere else before it becomes noticeable.
Shop guys are fucking insufferable for the most part. Either booger eating fetuses who's last time on wheels was in a pram, or turbo tards who throw a hissy fit at any sign of someone actually using their bike as intended.