.

try asking in facebook groups? or sell the tula and buy the one with hip seat? here are some you can try asking https://www.facebook.com/groups/735161113222470/ https://www.facebook.com/groups/820620677995300/ https://www.facebook.com/groups/825691864128882/

still looking for a hip-seat cause i have one that is not in use.

Best try Carousell