I recently had trouble with the flyscreen on the hatch over the bed on my Bailey Senator Indiana not retracting. I prised off the unit and brought it home for inspection. I tried to re-tighten it but found the fault was the little black plastic end was turning and was letting the tension off the internal spring. I then re-tensioned the spring and super glued the plastic plug back into the end. Hey presto, a lovely tensioned flyscreen. Might come in handy if anyone else has this problem.