We have taken to using the OH PDF Fill In form:  just leave it open all day and fill it in for the client and then we can at least give them a copy of the return (takes about 5-10 extra minutes) and get them out the door.  We are only doing this for clients that are pretty simple returns, nothing that we feel an update with the form will change the calculation for anything.  I figured 10 minutes now is better than a back-log later as more and more come through the door.  I am not happy to have to do this extra step but just can't let this get us behind!