Re: RDE-17 Johnson tuning issues Home › Forum › Ask A Member › RDE-17 Johnson tuning issues › Re: RDE-17 Johnson tuning issues chris-pReplies: 2456Topics: 153 August 18, 2018 at 5:18 pm #81414 No installing the boss gasket will cause no ill effects. It is primarily used on fixed high speed jet motors. However, I install it in all of the carbs I service.