I think the problem that the OP describes may be that the upright squared wings of the points stick out of the glazing fillet because of the depth of the muntins rather than the width of the muntins being too narrow for the sharp ends of the points. In that case she might just set the glass without points. Carroll, if you are new to setting glass then the most important thing IMO is to get the glazing putty worked to the proper temp and consistency. Knead a small handful of putty for about 15 minutes or so with your fingers and palm before setting the glass and the putty will cooperate much better. There is no stretchability straight from the tub so the putty tends to break into pieces. After being warmed up and worked a bit the putty will stretch almost like dough so you can use a putty knife to quickly create a smooth fillet.