I apologize in advance..
With all due respect, looks like you have 4 machines and have had them for around 4 years?
I’m new to this hobby, I think I’m coming up on a year- Just recently bought my 3rd machine. Last night, I was stone drunk and the ball launcher on my just purchased MSF was sending every single ball STDM.
Did I write a post about getting f’ed by the seller and spending a bunch of money? No.
My drunk brain did the logical thing and tore the machine open to replace the stripped screw on the askew target. (What a hassle, had to remove one of the lighting boards to get to it, a hell of a task when you’re 6 tall boys deep).
I pray to allah there’s a post about your machine not working in the tech forums- not just this one caterwauling about what machines do best- break down.
I went nuts deep on my first machine, learned things the hard way. I know that I don’t have enough money to pay someone to fix my shit, sounds like you don’t either.
Open the machine up and get started, it’s the only way. If you don’t want to do that, then yeah. Maybe the hobby ISN’T for you after all.