we've just put a driveway in. to save money DP decided to do the majority himself. we had it dug out and the sub-base laid by a local firm (as the area was so big it would have taken dp forever) and dp has done the sand layer and the block paving himself.
now, despite hiring a compacter and using it on the sand and then again on the paving, we've already got 4 dips where the car wheels go.
so, clearly it isn't compacted enough. or could there be there another reason? is there a way to fix it without having to lift the entire driveway and compact it all some more and then re-lay it?