Anyone tried an Ultimaker 2 with after market main board

[rotorhead 1]

I've had an Ultimaker 2 since 2015 and it's been generally great apart from a recurring and intermittent under extrusion problem. To try and solve this I have ended up doing lots of modifications and upgrades but nothing has really done the job. The problem is that it's all very sporadic and actually for the majority of my prints it hasn't been too much of an issue.

However, I'm at the point where all the evidence is suggesting to it being a problem with the main board. If that's the case then I might have lived with a faulty board since it was new (which would be rather frustrating!). Anyway, the only way to know is to replace it but an original UM2 board is not only expensive but also now very old tech and so I was thinking about something else. Has anyone tried this?

Having looked around the net, the BigTreeTech SKR Mini E3 v3.0 seems like a nice little unit but I've no idea how easy a job it would be having never attempted this before.