I have 1982 c30 with 11 hp 5411. the hurth transmission has a fluid dipstick that appears to have two marks on it. there is a definite mark near the bottom and a puzzeling mark near the middle of the stick. i found in the archives that the bottom mark is the level to use. i am looking for confirmation that the bottom mark is the one i should be using.....the manual isn't specific enough. thanks in advance.