Hi first post here and really excited about the HX Effects. If I am reading the manual correctly, a send/return block will take up one of the 9 blocks. For example, I have a delay pedal in one of the send/return jacks. I now have my delay pedal plus 8 more effects (blocks). The same would go for IR's. Load and IR and now you only have 8 blocks. Is this correct? Also, in using the 4 cable method will that eat up a block as well?