I agree 100% with your opinion on worm clamps. I've spent 1/2 of my life trying to sneak by with cheaper stuff - and still do on some things (I'm hard-headed), but I quit buying cheap Chinese worm clamps YEARS ago. When tightened, the threads strip & coolant leaks out on the top of your engine - then you've got slippery a mess on the garage floor......or worse, you're pulled over on the berm of I-75 90 miles from home with a steam cloud that smells like trouble coming from under your hood. We all know that smell.