61 Corvette - Weak Brakes

[scuncio]

Hi folks,

Working on my dad's '61, and it's become apparent that the brakes are just not up to what I'd consider a 'safe' level of operation. I had the original MC rebuilt by White Post ~15 years ago, and installed new shoes and flex lines at that time. I didn't touch the wheel cylinders, as they showed no signs of leakage. The brakes don't exhibit any pull to one side, but the stopping power is extremely weak - I can't lock them up under any circumstances, and the pedal feel isn't confidence inspiring.

I know these brakes are not self-adjusting. Should I start there first, and re-adjust each star wheel? Any advice would be appreciated.