Anyone experience any issues after using Techron? I daily drive an 86 Chevy K20 with a 350/Quadrajet and had been putting a bottle in the gas tank a couple tanks before each oil change. The last two times(six months apart-I change the oil in April and October) I have lost power, developed a bad miss, and it would start spitting out the carb when under light throttle on the highway. If you stand on it it quits coughing. This has gone away after running to below a quarter tank and refilling with just gas both times. I had used it prior to last October the same way and actually had noticeable improvements. I will admit that the carb is in serious need of an overhaul however it is running fine and getting decent mileage for what it is and the amount of tools and equipment I haul in the bed. Any ideas?