I may have to try that! The starting I mean.
Barney your funny! Borrow a compression tester, what will you think of next! That's the only difference between the two is red 90 has 170psi and yellow 90 has 150psi. The new carb is the one with the high altitude adjuster like the stock carb. After dindin I will swap carbs around. I predict Barney will run with either carb and nameless won't run with any carb.