I'm having trouble getting a suitable stroller/buggy for Larry who with liver cancer is now unable to manage his much loved 'walkies'. He needs a large size (ie big enough to lie down and sit up in). Most seem to be for smaller dogs (he's a Brittany, medium size, 18kg). I finally found one (on-line, Do Do Pet) that seemed perfect accept that it's near impossible to install the handle. More strength needed than I have to manoeuvre it into it's place. I've contacted the seller to organise a return. Has anyone else had this problem?