Im having problems with a project

Hi!

Im having some difficulties with a school project. We need to remake a plant spray.

I've put quite some hours into it, only to come to the realisation i've made some mistakes.

As you can see in the first picture the extrude cut cuts through 3 parts. I only want it to cut to just itself. The problem is, when i delete the other parts in the Feature Scope the whole plant spray seems to collaps in errors as you can see in the second picture.

I have tried everything ( change the end condition etc) nothing worked.

Even when i try to Fully divine a very small part which has nothing to do with the parts that produce an error, i still get errors.

I'm not sure what to do, i cant find any strange Parent/child relations or anything.

Does anyone has any advice?

Just let me know if you need to see more screenshots

imgur: the simple image sharer

SolidworksParts And Features