Reply to S4 timecode sync problem

Hi guys!
First want to say hi to everyone as im new to this site so i am sorry if this is in the wrong post.
Im using the s4 controller and have just updated to the scratch pro so i can use my pionner cdj 800s,

i have been playing with theses for a week and last evening i went to have a go and when using the sync button it wont hold sync.
If anyone has had this problem please can you let me no.

Thanks peps