Any reason that hanging a bike up on the wall by its front wheel would effect Shimano XT 4 pot brakes?
It can affect most brakes, in that any air in the reservoir can make it's way into the brake line when they're hung up. Pumping it a bit while it's right way up should remedy it.
@Stoo61 started
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Any reason that hanging a bike up on the wall by its front wheel would effect Shimano XT 4 pot brakes?