British sidecar champions Jon Tuck and Matt Sparkes preparations to defend their title have suffered a major setback. Jon crashed his pushbike riding home from work before Christmas suffering a dislocated shoulder and a cracked bone. Doctors are saying he will be out of action for 4 - 6 weeks meaning they will get no practice on their new Beta 290 Evo before the first round in the Isle of Man in Feb; If Jon is fit to ride at the first round.