That's a great basking surface temp. How does your beardie like it?
Since the cool side temp is only 74, it would be great if you could get that up a little more within the 78 to 82 range. Do you have another dome light/clamp lamp that you could put a 25 to 40 watt household light bulb in? It wouldn't have to be a real large dome. That would not only raise the cool side temp but may even bring the basking temp up a degree or 2.
On my 40 gallon breeder, I have an 80 watt MVB on a lamp stand for basking & a 40 watt household bulb on the cool side, basking temp of about 103 and cool side about 81 which my
2 1/2 yr old female prefers.