tested on strength 0.9 - works in 8\10 cases on 1.0 works on 9.5\10 cases
less mostly wont work
tag tested - (Grab another breast:1.3), 2girls, underboob, (underboob_grabbing_another:1.0), Yuri recommended strength 0.9-1
if wont work at all copy my settings and try my checkpoint yutamixv13