Thanks for replying, i checked the blanket and it seemed tight, but i had taken the blanket off and there was some packing sorta bunched up at he lead edge, so i took the packing out and tried it again, a friend told me to check the buckle adjustment, well.... the toko 4750 (Multi 1218) doesn't have a buckle adjustment knob, toko repairmen say it doesn't need one. So i checked the service manual and there was an adjustment, you have to loosen two screws and adjust two excentric bolts to adjust each side, I raised the feed wheel assembly to the weakest point and then ran some more envelopes and the image is a LOT better. But i can still see a hint of the smearing. Like you I wonder if the blanket with about 6 sheets of packing has stretched. Thanks Robert