When you get to horrace, you have to cut him open, fix his heart with
the stapler, lighter and pain reliver goo. Then bugs will come out. 
Take the batterey and zap the bugs individually. Patch him up once 
again, You will then proceed to cut him open even more, and you will 
have to use the x ray cut where you see the dark figure, and then get 
the batterey once its open. zap the opening until a big yello bug comes
out and zap him. do this procedure repeatedly until all bugs are gone.