I just put my forks back together after disassembling/cleaning and there acting pretty wierd.With the top cap on and no spring installed,the inner tube will not extend upwards freely.As if vacuum keeps it drawn in.If I install the cap with the tube extended,the fork tube stays up from inside pressure.Is this normal?I never noticed it just doing a oil change.After cleaning all the parts,I dried everything with compressed air including the shim stacks.All the internals are good and in order.Any ideas?Thanks!