My 308 is missing and backfiring on the front four cylinders. I put a timing light on it and discovered when I revved the engine there was no advance on the flywheel on the front bank. After removing the distributor and disassembling it, I found a thingamajob that looks like it might have something to do with advancing the ignition. It attaches to the back of the distributor, has two arms with two spring loaded dohickees in each arm. It appears that only one spring is working, the other three seem to be broken or so weak the dohickees don't work. Question: Where do I get new springs? BTW, Hi everyone, I haven't been here for awhile.