No twp people think alike. When I opened a restaurant, I had a partner that I thought I knew well. We knew each other on a personal and professional level having worked together for a couple of years. Made it a year and it became obvious we had different views on how to run a restaurant. I bought him out. Two heads are not always better than one.
Do you need a partner or an operations manager? Those are two different things. An operations manager can make things work, with the goals you've set to achieve; by hiring the right staff, setting production schedules, keeping an eye on food costs, etc. A partner is going to want to set the goals and their vision might not align with yours. Think about why you want a partner - to share the financial risk? To share the workload? You can get working capital if you need money (do not go to a loanshark though! Those places who call and say they will give you working capital with no supporting documents....) but if what you need is someone who can handle day to day operations, hire for that.