some issues on Leopards Print Service

Hi All, Can someone share out some advice on how to solve some of our issues on Leopard Print Service. First problem we had is when adding a printer on a client from a Print server the driver is not detected as it is, it will generally use the generic postcript driver which if you use it, you will not be able to print. I remember back a month ago that it will auto detect its driver when adding from the print server. Second problem we had is when we add a printer from a print server and specify its correct driver we can be able to print but most of the printouts are outside the specified paper like when we print from word document with header on it, the header will be printed in half. Thus we are saying that it does not print correctly. When we ty to print the same document and added the printer directly using bonjour/appletalk it print outs correctly. Thirdly some of the printouts are not printed on the correct printer like when we specify to print on printer1 its prints out to printer2. here is our setup. Leopard Mac OS X 10.5.5 printers are added on server systems preferences the printers are: HP Color Laserjet 2840 added using bonjour HP Color Laserjet 5550 added using Appletalk Created the following queue HP Color LaserJet 2840 Server to print using the HP Color Laserjet 2840 HP Color Laserjet 5550 Server to print using the HP Color Laserjet 5550 all of this queues are shared via IPP/Appletalk/LPR Hoping that there is someone who could help or point out some more information on Leopard print Service.