Chuck, did you set the timing with the vacuum advance hooked up?? It seems that is the problem... when you give it gas the vacuum drops off. hence the lack of advance. Timing needs to be set with the hose off and plugged for correct setting. On to the starter... sounds like the bendix is sticking. If you remove the nose cone of the starter, there is a gear with a spring and pulley assembly that moves with the fork you will see in the pulley. It could be binding on the shaft.. or the spring could be weak, and or the bushing in the nose cone may be worn , letting the shaft shift to the side, binding the bendix. Does any of this make sense to you??? This is a lot harder to explain than I thought! I could have replaced the bendix, and bushing in this amount of time!!
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69 GMC K10 ..some restoration required....still..
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