Ray, I think you've got it. Like I said earlier on in this thread, if you want to use a foot switch the NVR (magnetic) switch needs bypassing or replacing with an ordinary toggle switch.
Yes Ray, that's what I mean. When you say magnetic switch to me it means a switch that has a magnetic back that allows it to be put anywhere on the machine. Oh isn't the English language great, depending on where you live determines what something is called. Parliament or a visit to the courts, some Judges and barristers still wear wigs.
It's not really a problem with the power grid, it's that all our machines are fitted with NVR (no volt release) switches and to use a foot switch as intended this needs bypassing. And not a powdered wig in sight.
I find it simple, with the pattern in Inkscape, go to path and click on trace bitmap, then with the trace selected, left click on the fill colour of your choice, then right click on the colour you want the lines and select set stroke.
Brenda, pages 18, 19 and 20 of the manual https://www.axminster.co.uk/media/downloads/501201_manual.pdf cover blade changing. I've not used your saw so can't offer any more advice than that.
UKworkshop is about the best UK forum. https://www.ukworkshop.co.uk/forums/index.php
I think bad batches in blades are common and not manufacturer specific, here in the UK a while ago a lot folks were complaining about FD blades breaking.