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That's normal rep, they don't spec a pop pressure. We just need more fuel for our application then a standard weed Wacker engine lol.Just to chime in again, I just did the pop pressure on my boat carb which is a wt-1048. First check it went over 30 and it ended up blowing the line off so I cut the top group of coils and it brought it to 30,half coil it went to 25 and then one last half brought me to 20. It doesn't hurt to make sure your spring is right, sometimes you get lucky which I did on my new 5t 2.0 but most of the time no dice.
Think of it like this. You get a weed Wacker, saw, blower, ect in. Bad carb. Toss a kit in and it runs great. Now redesign the engine for performance and it needs more fuel. Now we need to worry about more fuel, so pop pressure becomes important.Anything is better than pinning the needle on the Gauge