Hot start problem resolved due to failed check valve in the DMCH fuel pump

[Bitsyncmaster]

Thanks perfect, thanks for the info Dave. So that'll be the size for the smaller o-ring. Do we know the size for the bigger o-ring? Or does that one prove to not be much of a factor for holding rest pressure when compared to the smaller o-ring?

Don't worry about the larger O-ring. It really stays dry and does not need to seal.