horse box conversions are very heavy and can be overweight when laden is loading door on one side with big heavy helper springs and heavy door vehicle slightly leans to one side from the weight? is it a 7.5 ton? or 10 ton? If 7.5 suggest having 10 ton springs fitted if 10 ton you can still uprate but will need to talk to specilist also your shock absorbers my not be performing properly due to age (weak) and also the anti roll bushes may be worn.
daf13yrs, July 2010