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You could do, but I’d be careful in case someone decides to charge you for a full clean/service which is pointless. You could ask for a quote for a movement replacement, or even provide the spare movement by buying one yourself. If you don’t get any reasonable estimates then wait a month or two and I may be able to take a look (I’ve done my BHI quartz exams, and these are fairly simple).
Most of them are Ronda movements. You can usually clean the bearings and lubricate them without having to fully disassemble. However, you need a proper quartz testing machine like a Witschi to prove that the current draw has dropped down to within the manufacturer’s spec.