Well one I’d like an opinion on. Any rules of thumb on how much torque do you use on the circlip that holds the hoses onto the plastic radiators? Yep my cars top hose has developed a slight drip. Gave it a 1/4 turn which has almost stopped it. After a run & cool down just one drip yet to drip. Very minor but am loath to tighten the clip,any more in case I crack the rad. The drip only started a couple of days ago after nearly 10 years & 49000 miles. Guess at some point one of Simons Radiators ( other makes available) will give peace of mind.