ZigZag, Viper and Rocker flyer:

qintflyer12.pdf [669 KB]

qintflyer22.pdf [424 KB]

Assalbly drumbrake ZigZag manual. See download below.
zigzagfinetuning.pdf [37 KB]

Assalbly drumbrake Viper manual. See download below.
viperfinetuning.pdf [69 KB]