Happy new year all, ok after riding my haibike for a short while I start to get pins and needles in my fingers and sometimes numbness, the only thing I can put this down to is riding position and that the bars are too low, I'm very tall at 6ft 7ins. I've had the bars off to see if I can raise them up but doesn't seem possible and I don't want to get a extension because it will ruin the look of the bike..... would fitting downhill forks raise the height of the handlebars?