different engines on my rocket are consuming fuel at different rates and then when "run out" of fuel they drop off

[cooling]

when i launch my rocket seen below the engine display the green bars will run out in varying speeds despite there being enough fuel and when they are "empty they just drop off as if they are being decoupled (they are not on decouplers)

please help i will provide more pictures if neccessary

 

 

 

 

[jimmymcgoochie]

It could be a crossfeed issue if the engines are draining from tanks other than those directly above them, is there any fuel/oxidiser present in the central part? Pin some fuel tanks open during the launch and get some screenshots (or better yet, a video recording) as they drain and then when the engines stop.

Are the engines falling off once they stop producing thrust? Have you tried adding (more) struts? 

[cooling]

5 hours ago, jimmymcgoochie said:

It could be a crossfeed issue if the engines are draining from tanks other than those directly above them, is there any fuel/oxidiser present in the central part? Pin some fuel tanks open during the launch and get some screenshots (or better yet, a video recording) as they drain and then when the engines stop.

Are the engines falling off once they stop producing thrust? Have you tried adding (more) struts? 

i rebuilt the boosters but attatched them outside of the fairing and i think that did it