I have a 1967 Dodge Coronet with a 440 727 combo. I had an old Dodge mechanic rebuild my trans. The trans only has about 100 miles on the rebuild. Well the trans is leaking from the bellhousing. Originally the trans was rebuilt with a copper front bearing. I bought the new torque converter they said I needed to replace the copper bearing with the brass bearing given with the torque converter. I put the brass bearing in.

What is the general census of what my problem might be ?

Thanks guys !