what works better for ballooning tires

[blueb8llz]

ic ic. since we re on this subject maybe you guys can help me on this part of the tire process. before gluing i always mount the tire onto the truck to see if it spins smooth, if it does not, ill take readjust the tire foam and mount again and ill do this a few times untill the tire spin smooth. its pretty much luck of the draw as i install the foam the exact same way each every time, but i guess its more or less centered at times. but anyways, when my tire is balanced perfectly..time to glue. and after gluing, i mount the tire onto truck, and its unbalanced again...wobbly..what i mean by wobbly is picture a red line straight in the middle of your tire going all around your tire, when i give it throttle the red line would spin squiggly instead of spinning straight.
why does it do this..annoys the heck out of me.
and i even do the electric tape trick where i wrap tape around the tires so that its constantly giving pressure while i glue...sorta like the rubberband trick.
do you think the pressure might have cuased the foam to shift...but the other 3 tires i glued is fine with the same method...something i dont know?