In traninit.c:

replace:

    if(ckt->CKTmaxStep == 0) {
	ckt->CKTmaxStep = (ckt->CKTfinalTime-ckt->CKTinitTime)/50;
    }

with:

    if( ckt->CKTmaxStep == 0 ) 
    {
		 if ( ckt->CKTstep < ( ckt->CKTfinalTime - ckt->CKTinitTime )/50.0 ) {
		   ckt->CKTmaxStep = ckt->CKTstep; }
    	 else
    	     { ckt->CKTmaxStep = ( ckt->CKTfinalTime - ckt->CKTinitTime )/50.0; }
    }