fuck singulators, they suck u hit them once they develop side to side play and ull never retain ur chain,
get ur der, remove as many links as u can then run the der on it, zip tie the der to the frame, remove the limit screws and replace them with longer ones, and screw them in when u have the der adjusted it wont move, for a bit more adjustability, get the end of of a der cable or brake cable, cut it about 3 inches long and run it with the knob on the barrel adjuster side and tension the der on the right gear, so if u ever want to adjust it just play with the barrel adjuster.