Enlarging radar chart to fill entire widget area

I have a widget group on my dashboard containing a Radar chart along with some other labels below it. I'm trying to make the chart (which isn't showing any labels of its own) fill the entire area of the widget but I can't seem to make it larger even after resizing the group. Here is what it looks like right now:

image

and here's the same image again with the widget background color changed so you can see all the extra whitespace.

I Imagine that this may have something to do with the text labels for the chart taking up space, but I thought if I cleared them that the chart would get larger to fill the entire area. Is there any way to force it to fill the full space?

For reference, here's the portion of the flow I made to generate the image above:

[{"id":"82b9d474e7a247c5","type":"inject","z":"6bde1e1fa1986b92","name":"Populate Chart","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":true,"onceDelay":0.1,"topic":"Pie Hole","payload":"0","payloadType":"num","x":1220,"y":380,"wires":[["d561b2c16975921a"]]},{"id":"d561b2c16975921a","type":"function","z":"6bde1e1fa1986b92","name":"","func":"var m = {};\nm.labels = ['0', '15', '30', '45', '60', '75', '90', '105', '120', '135', '150', '165', '180', '195', '210', '225', '240', '255', '270', '285', '300', '315', '330', '345'];\nm.data = [[20, 40, 75, 77, 74, 65, 45, 42, 36, 24, 15, 0, 0, 0, 10, 12, 15, 35, 50, 35, 15, 12, 10, 0]];\nm.series = ['Series A'];\nreturn {payload:[m],topic:msg.topic};","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1390,"y":380,"wires":[["2d7b94e1f49af480"]]},{"id":"2d7b94e1f49af480","type":"ui_chart","z":"6bde1e1fa1986b92","name":"Antenna Signal Strength","group":"c6dbc0e6d097a4ab","order":1,"width":10,"height":7,"label":"","chartType":"radar","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"No Data","dot":false,"ymin":"","ymax":"","removeOlder":1,"removeOlderPoints":"","removeOlderUnit":"3600","cutout":"30","useOneColor":false,"useUTC":false,"colors":["#1f77b4","#aec7e8","#ff7f0e","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5"],"outputs":1,"useDifferentColor":false,"className":"","x":1600,"y":380,"wires":[[]]},{"id":"71c4c89c983f81bc","type":"ui_text","z":"6bde1e1fa1986b92","group":"c6dbc0e6d097a4ab","order":2,"width":10,"height":1,"name":"","label":"Current Tilt Angle","format":"{{msg.payload}}°","layout":"row-spread","className":"","x":1580,"y":420,"wires":[]},{"id":"ba7fc27d473736c4","type":"inject","z":"6bde1e1fa1986b92","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":true,"onceDelay":0.1,"topic":"","payload":"0","payloadType":"num","x":1380,"y":420,"wires":[["71c4c89c983f81bc"]]},{"id":"c6dbc0e6d097a4ab","type":"ui_group","name":"Cellular Antenna Control","tab":"7fb180df99cf13b4","order":4,"disp":true,"width":"10","collapse":false,"className":""},{"id":"7fb180df99cf13b4","type":"ui_tab","name":"Communications","icon":"fa-wifi","order":15,"disabled":false,"hidden":false}]

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