How do I increase power on STEPPER MOTORS ? Is it the three tan screws on the Gsheild?
There are three potentiometers (“pots”) on the card, each of which has a small ‘phillips’ head slot in the top. They’re tabled “X”, “Y” and “Z”.
Search the forum - there are several descriptions covering how to adjust these pots correctly - the critical thing being BE GENTLE with them.