250 Suzuki losing RPM's briefly if run over 4500rpm

[kbait70]

My new motor has 140 hrs on it. When running over 4500 rpm for extended it time the motor loses rpms it drops sharply- If I keep the throttle engaged it will cycle back up- Thoughts - I've changed the inline filter and the fuel separator which I run a 2micron- Could it be the 2 micron restricting at higher rpm?

[Murray]

https://www.suzukioutboardforum.com/...arator-filters

[kbait70]

So obviously not the 2 micron separator- What about the screen in the VST tank?

[kbait70]

tried the screen no luck - was clean replaced it anyway- looking toward fuel pickup - maybe check valve but n to sure I actually have one