Does anyone know if the headpipe to manifold bolts on an 88 duke are supposed to have springs (like most cars have)? Mine don't, and one worked loose. I was noticing the exhaust was sounding like there was a leak, and when I checked, I found the loose bolt, and found that there were no springs. I managed to tighten the bolt pretty good from the top, and when I get a chance to get under the car, I'll tighten it better. But it seems strange that there are no springs.