You might be able to cut off some of the p o plug under the lav.,depending on its length.Years ago you could buy low inlet p traps ,but dont think they are made anymore.The best bet would to lower the drain line coming out of the wall.Might try cleaning out the line or taking off the trap ,could be partily plugged do the reverse grade of the pipe.A pump is not the answer. I would say that your description of the problem is correct.
» This message has been edited by racefanone on 24 July 2003