The stock clamps just don't tighten properly. Especially after removing them a couple of times. What happens is if you have a leak, when the motor heats up the rubbers expand a bit and then the leak goes away. Makes for a real headache when trouble shooting. I have the oem clamps, but am looking to buy some replacements. I friend of mine has a '01 bonneville who had an issue with the oem clamps too. So you brr riders could have an exaggerated problem given the nature of thermodynamics.
