Don't print with eSun matt PLA. Doesn't work with UP300

Just a quick warning to others - the UP300 cannot print this filament at all. No matter what settings, the filament feed mechanism just strips it and stops feeding. The slightest back-pressure will also stop it feeding.

A shame, because it’s an interesting filament. It’s just not compatible with the Tiertime head.

It prints OK on my dreamer though… So must be something in the head design ( eSun PLA and PLA+ prints perfectly in the UP300 though on default settings - Even if support is a little sticky )