any anwsers would help ive had the last two pots i installed go bad right off the bat. one emg push pull and one standard 500k im useing the same solder and flux ive used on all my pots for years about 40-50. i dont get it. the push pull has a dead spot in it thats not in the same place all the time. sometimes low then high. the 500k pot is scratchy its killing me.