I agree, the Rose can be shimmed. That will be necessary if the screw that holds the positive post isn't making contact with the metal disk inside the base.
OP, first thing you should do with the Rose is to tighten the base. You use your stand and the metal rod in the parts kit. On the side of the stand is a round cutout with 2 tiny metal prongs. The bottom of the atty fits into that. Get the atty on there and hold it with one hand. With your other hand, insert that straight rod into the hole on the side of the base and use it as a lever, turning to the right to tighten the base. Then check it to see if you now have a connection.
If you still don't have a connection, remove the base turning left (opposite of how you tighten it. Inside you will see a metal screw going into the insulator. Make sure the screw is tight. If its loose, that might be the problem. If its tight, try putting some type of washer between it and the insulator to extend that screw a little. You may need a plastic washer to cut one side to fit against the insulator. Your goal is just to extend that screw head a bit so it makes contact with the metal disk in the bottom of the base.
However, that circuit board spacer is always helpful, too, for attys with short pins and mods that aren't adjustable.