axman88 - When the front brake lever is is pulled in, the reservoir of fluid is open to the fluid in the brake line. Overnight the tiny air bubbles will rise by gravity to the reservoir. Then you can check the fluid/reservoir level in the window. It probably won't need a fill up. Pumping fluid up from the bottom is very efficient. Still, there are tiny bubbles.
That's how I have an aged 2011 Bullet with a front brake that feels like showroom, not antique-y! Thanks to the light weight of a Bullet, the single disc has plenty of stopping power. Also, there's a payoff in weight loss as you have tossed your stock silencer for a custom one. That probably threw away around 20 pounds.