yeah i think the springs are thicker. they just dont compress as easily as shown in some videos, although those are for the wuque which amy use different springs. Just get a good 4x4 from the start, my 4x4 times should probably be seconds better if i was using a good cube and not this "thunderflap" 4x4... makes me lose motivation to practice 4x4.I have tried to compress the springs, but it seems to be impossible. Maybe I am not skillful enough to do the mod. I may think of getting another 4x4.