Hmmmm.... see y'all like to take the piss out me for having been a tradesman but it saves me a bomb with stuff like this. In your situation I'd only be looking at the cost of the parts
Anyway, as I always say to anyone in your situation, be patient and DO NOT engage with the AAAAAAARDVARKs. The will totally rinse you in addition to being dangerously incompetent.
I can come round and do it for you if you like Ash. It won't cost you much but I will expect to have s proper go on your missus.
I have never taken the piss out of your past as a noble executioner of the practical arts, Herbs. And I'll have you know that I used to do my own repairs on my guitars and amps back in the day so ner.
Eventually though, I decided that work is best done by a specialist, and having saved far more money by not having kids than I ever could by not having to spend a few bob now and again on hiring some help I'm not too worried about the dosh. It's the inconvenience that bothers me.