You might have a clog somewhere preventing the pressure from getting to all the pads. Your rear breaks may be fine, but not the fronts, or vice-versa.
Examine the break at each wheel, one at a time. Look for evidence of a stuck caliper/ wheel cylinder.
Report back
On their death bed, nobody ever said, "Gee I wish I'd spent more time at work!"
'68 Sprite 1275
'76 Midget 1500