How much tension should the chain have on it when there is no oil pressure ? I'm trying to understand if the slack I am seeing in my chain is normal.......in certain positions, I have, what seems like to me, a lot of play..e.g. the chain can flop quite a bit (e.g. I can flop it against the plastic guide and probably an inch in the other direction)....in other positions it seems very tight.

Thanks,

Brian