FWIW, I would caution against increasing voltage to solve a stall that is accompanied by a warm motor. A higher voltage may help the motor overpower excessive friction or imbalance, but will also put more current through the motor, resulting in more heat and a potential burn-out. Both, a? warm motor and stall messages indicate the worm/gear mesh being too tight, or mount not being balanced. I'd solve these mechanical problems, first, before increasing supply voltage.
Regards,
? -Paul
Paul Kanevsky