loosing power and runs like crap GS750 -77

[Warlock]

Hi, hope I put this in right section.

Problem again with my GS750 -77. When I have driving the bike at around and over 100km/h for a while it can loose power and it sounds the machine is only working on 2 or 3 cylinders. I have to stop and the only thing I do is to shut off the engine and wait 1-2 minutes, start it up and it runs normally again. I have never had this problem when I driving at less speed for a while.
New sparkplugs...
Engine, carb, ignition related problem?

[Coady]

Vapor lock?

Check that you're fuel tank is venting.

[almarconi]

If the jetting is correct I would suspect fuel starvation. Is the petcock original?

If you are using an inline fuel filter, remove it.

[Warlock]

If the jetting is correct I would suspect fuel starvation. Is the petcock original?

If you are using an inline fuel filter, remove it.

Thanks for the the tip

Yea.. have a inline fuel filter between petcock and carb
Will try and remove it end see if the problem goes away... thanks.