So i know probably this was asking like a zillion times but i have to bowl nationals in my country on a 45 ft heavy oil pattern.

I ve drilled a 505t with the intention to be suitable to this pattern and it wasnt, so ,i am around 400-450 RPM 18 MPH...what ball do u recommend me? Its better if its on ebonite brand (track,columbia,hammer,ebonite),but i am open to all the manufacturers.

Thanks  lot

Jonah