After assembling the system needs to be tightened one or more times. In the beginning the twined dyneema and the knots in it need to set, resulting in a somewhat greater length. The return elastic can compensate quite a lot of difference in length, but there is an end to this. In this case simply shorten the cord slightly. Dyneema tends to "crawl". After a longer time (approximately six months) you might need to shorten the system again. You can shorten it simply by hooking the shock cord into another hole of the Snek. For larger adjustments you can shorten it at the ring or choose another hole for the shock cord.
In the gear ring are, at equal intervals, six mounting points for the return shockcord. They enable the rider to make personal adjustments for gear range.