My 2001 van is clonking badly at the back. Going over a speed bump and even letting out the clutch anything other than very gently gives a nasty sounding clunk. I replaced the shackle bushes on the leaf springs but according to LDV the bushes at the front end of the springs are not available on their own and come in a new leaf spring! Nissan are useless and not interested in helping me but I cannot believe I have to throw away a pair of leaf springs for the sake of two rubber bushes. My old Hyundai van vas the same but only the rear bushes ever wore out which are easy to replace. Does anyone else have experience of these vans going very 'clonky' at the back. I have had the van up on a ramp and nothing is obviously wrong apart from these worn front bushes on the leaf springs