Had my bugaboo for 4 years now, on third child but not been used as main pushchair all the time (i have several!!). The brake has got really weak though and just doesn't hold anymore with any significance. My dad's had a look at it for me but can't get it any tighter. Any suggestions? I know I'm well over any warranty period but it ought to be reparable or fit for purpose, especially where I live and with something as important as a brake. My youngest is only 1 so would still like to have a couple of years use out of it and possibly sell on, but won't be able to with faulty brake. Any help much appreciated. x