Of course, a rubber belt is a type of flexible coupling and therefore will accept some, if not a lot, of misalignment, so why bother fing with it you ask, I want to mill damn it 😆
Well, why not do it right, an uneven belt, even by a few mil can put strain on bearings, it can wear the lip of a gear housing and cause damage to the belt, thus causing downtime when it eventually WILL self destruct $$$
Here it is nice and straight and very happy to be almost in service..
