11-02-17, 05:21 PM
I would take the wheels off and get someone to pull the handbrake off and on, make sure when the handbrake levers on the calipers go all the way off when the brake is released, if not it could be a sticky cable or caliper, if all is good there remove the pads and make sure they are free in the brackets. A slight adjustment on the cable once thats done may also help.
If you worried about falling off your bike, you'd never get on.