YES you can inspect the front lobes. I have a Vivida ?? (stick one)and have a motor was supposed to only have 4.2 hours on it that has been sitting for 25 years in warm areas, so wanted to have a look see. I bought the $500.00 smaller ended flexible Vivita so's I could look up the factory crack in the case after you pull the pan off
WELL guess what??? the stick Vivida went up through the crack and my cam looks great. The crack is big enough.
Now if you have a problem with the rear cylinder cam lobes, it's cylinder pulling time.
Sure wish I had tried the cheap one before I bought the spendy one
My luck varies Art