engine flange sealing process

Vehicle Information: Model: 911; Year: 1974; Body Type: Targa; Total Mileage: 48,000;

ready to assemble case halves, how do you keep the flange sealant from clogging up the small oil relief groove? (the groove to wich i am reffering to is cut around one of the web bolt holes on the flange of the r/s case near the top in the back of the case).thanks michael oneill