First time checking the valves on my 09 yz450f and I am a bit confused about finding tdc. There are 3 lines and it seems to be in tdc at the last line. Should it be completely centered with the top indicator for it to be in tdc. Also should the punch marks on the cams be facing out not perfectly aligned. The manual imo does not do a good job being specific which makes it hard to learn how to work on the bike. Ive used the search feature and read the sticky but they dont seem to give definate answers to my questions.