Hi all,I've had my E36 convertible for a while now and recently a few things have started to go wrong??? 1st is that i have to keep topping up the rad after a few hundred miles?i've looked at the rad and hoses and all i can see is a trace of water from a seem a few inches below where you top the rad up? and secondly the roof needs assisstance when taking down or putting it up? Just wondered if its a case of thightening some cables under the cover or is it a case of the motor going? Any help or advice on these matters would be greatful.