They seem to be able to switch out a Raptor 2 in a couple of hours, even quicker sometimes. It's not impossible there will be some need for maintenance on the

They seem to be able to switch out a Raptor 2 in a couple of hours, even quicker sometimes. It's not impossible there will be some need for maintenance on the Merlins, probably on the injectors I'd imagine, as there'll be some coking build up (it's RP1 not CH4).