Should be ways to fix the lever.
Either watch some video, find some pics and you'll sort it out.
As for MTBs, I've still got my Commencal but it's built for going down not up. A few mates have Scott's and Treks which aren't badly set up. Most will be more than capable of what the majority would be riding. The Mates that ride the Treks have them kitted out, but also easily hit some 30-60ft jumps.
Few weeks back saw the handmade bike show, some really nice looking bikes.
Currently watching the Tour and not long until the BMX World's start in Nantes France. Big few weeks of bikes.
Not to also forget the Downhill world cups which have been on aswell.