You need to put the right names into the read objects (it’s the name of the object delay/write sdram) so for you here it would be write_1 for the top and write_2 for the bottom one.
The clean right signal needs to be plugged into the xfade object too.
You will probably need some kind of dial for the speed, feedback and amount or if this is in a subpatch, maybe put red inlets too and cable the audio in directly from the main patch.
Otherwise it should work well, I think