Dudes. 
 
I purchased one of these tuners off a fella here a few weeks ago. Its an awesome wee box. 
But heres the deal: 
 
Bass plugs into EBS Microbass II, I plug the tuner from the 'send' of the EBS fx loop into a Fulltone Bass-Drive, from there its straight back into the 'return' socket. 
The problem is that when the tuner is in the loop I can't get any effect from the Bass-Drive, theres some signal but not even much of a clean sound is coming out. 
The tuner works fine, I also tried putting the it after the Bass-Drive, nothing. 
 
Also, I tried using the tuner in the 'link' socket of the EBS so I could take it out of the loop, nothing. Doesn't work. 
 
(Also, definately sure my patch leads were in the right IN/OUT sockets. Several people checked) 
 
Words of wisdoms folks?