Are the coils on the 74 GPX 338 interchangeable? Sled was running only on RH cylinder until I found the LH coil wire had been messed with and had to really push hard on connector to get LH cyl to work. After market part #'s are the same for L or R. Yamaha has two different #'s for L or R. Engine was just rebuilt, this was the first firing of sled.
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