Yeah, I plan on contacting Vista Pro about the problem. They do have a warranty but it states that it's void if it's due to over tightening/stripping threads. I, however, didn't strip the threads as there wasn't any fluid coming out where the lines go into the tranny line connectors on the outside of rad. Whether they replace or not, I plan tonight to flush all lines and back flush again, through heater core hose but since there's tranny fluid in rad & vice-versa is there anything specific I should use other than water to flush with?