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Hey all. '98 SuperHawk with 23K on it and in the past month or so just started bogging down between 3 and 4K RPMs. I recently changed out the stock gas cap for a Vortex cap but didn't notice the issue at the time of the change. The only other thing I did that was out of the ordinary was add Stabil to the fuel. I did change out the diaphragm in the petcock in the Spring for a similar issue, but it seems a bit off that I might have a tear in another diaphragm after only 1 season. Any other ideas on why the bogging might only be limited to the 3-4K RPM range, otherwise, she runs strong. Thanks in advance for any ideas on what to look for.