At least you have done this the right way round, a lot of people buy a M3W and then start to ask questions about what they should have been looking for. With your hands on skills and engineering background it could be a good buy, not a bad price either. It will require some updates if it is very original but nothing you will not be able to do yourself. This is the best forum for M3W advice, some of it is good even! 😁
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