My first attempt with Metaguide went well, my second not so much but I had changed the hardware configuration quite a bit. The weather has been very uncooperative since then but I made no changes to the default settings.
I know Phd has issues when guiding near the scp, insufficient movement to detect at low f numbers. Maybe this .. ?
I'll keep experimenting when the weather gets it right. Hopefully someone else will chirp in, I quite like Metaguide and I need guiding.
Nothing wrong with gaffer tape, otherwise gaffers wouldn't use it ..