Back Plate O-ring for k5.9

[MikeK1981]

Anybody know if the bigger o-ring in this set goes to the backplate of a k5.9?

http://www.hpiracing.com/products/en/15241/

If not, does anybody know the part number? I have fuel leaking out at the top of my rotostart plate and I think it is just the o-ring on the back plate of the engine allowing fuel to escape when the engine is under pressure.

 

[Bankrupter]

yep it does next two go on the carb then the smallest go on the needles

 

[MikeK1981]

Thanks for the quick response.