SV06 y axis issues / layer shift

Good morning all,

Hitting my head against a wall and direct support hasn’t provided feedback yet

Currently own the SV06 plus out of the box and love it. Has been loyal for a year with few cloggings to speak of.

Recently all prints that require heavy y axis movement have aggressive layer shift. Smaller prints are affected but anything larger than an inch wide does.

Support suggested tightening the screws on the y axis but for the life of me I can’t determine what screws are being referenced.

Ty in advance.