I did the following

- At the contract level I set the Overhead type to Percentage of cost on a job

- set the % to 26.74

- entered and posted a cost and eq transaction 

** I anticipated seeing my cost + 26.74% in my GL batch.  I only see my cost

I thought it might be that I had to set it at the project level and that the setting at the contract level is only a default like other settings but I can't find anything to set at the project level.  

What could be wrong as to why the Job OH isn't calc at all.  Labour OH works fine.