1961 c-10 inline 6. i know there are lots of tune up pages out there i have read a lot of them. truck ran fine- i was gone for 2 weeks for work and when i came home if i step on the gas quickly the engine bogs down. slow peddle push no problem. set dwell to 33. new plugs set to .35'' new plug wires installed. engine idles nice at 600rpm but when i through the timing light on it couldnt see the "ball" to line up. still having the bog down issue. is it time to pull the carb off? or are there some more things i can try?