Has anybody had any luck perfect binding books when the cover is printed on the inside off a Xerox Igen? We have already converted back to fuser oil I but it is no better. Really dont want to go to the expense of PUR unless its a last resort! We are in the middle of custom books with 100's of titles at numerous press runs, so scuffing these cvrs is really not an option to get any worthwhile production.Any help at all would be appreciated..........................