Just returned from a trip around Southern Ireland and when replacing the BM on the trailer noticed it was rather bouncy on the rear end, so much so that the two rear retaining straps came off despite being tied down very securely. just looked at the handbook on return home and it states that the shock pre load should be wound in 21 clicks, trouble is, mine don't click! just goes in with no resistance. Does this mean the shock is shagged or am I being somewhat obtuse here?