There is alot about it on this forum if you do a search. I dont have a link to any of them but theres tons of info on spinning and the shakes. I read alot about it and seen a few really bad cases of spinning. Thats what made me change my mind on a spider. Dont get me wrong their killer. Everything there crossed with is killer. I just didnt want to end up with a bunch of babies that were all messed up. That i couldnt get rid of. I ended up getting a female mojave instead of the spider female i had picked out.Nobody knows what really causes it. Some that do it have stopped. Some that didnt do it have started. Messed up ones can have fine babies. Good ones can have messed up babies. I was reading somewhere RDR and Nerd both said they dont have one spider that isnt messed up in someway.Im not saying anything bad about either of them. Both are great guys. I was talking to the guy i got my mojave from. He said none of his spin. Some of the babies shake but not that bad. After a few weeks cant even notice it.