Bump stops

Hi I'm new to this site and no doubt I'll be on again with some kind of problem or another!!... Any way is anybody able to help with a litte issue I have, the vehicle in question is p38 4.6 and currently it sits on its bump stops, it takes an age to raise every morning because it seems to be dropping down every night?! it's currently sitting down outside and I was wondering if there's anyway of getting it up so I can take to a garage for them to look at, I should have said I've already had the compressor apart and fitted new filters and seals... Thanks in advance mike