1988 TRX350D head bolts…

I am putting the top end together and I neglected to mark which flanged head bolt is on the exhaust side and which one is by the intake side. They are considerably different in length and dropping them in the hole did not convince me 100% where the long one and short one belong. The manual does not mention the different lengths either.

I forgot to mark them now I am stuck because I don’t wish to crack the cylinder by mixing them up

Thanks…

John in OK