When I had my big block stroker put together earlier this year I had a problem with it with in 50 miles. I pulled the motor and gave it back to the guy that put it together for me.(I Had paid him 600$)Turned out in the process of assembling the motor he forgot to torque one rod bolt,[we are all human). He paid for all new bearing,gaskets and 8 quarts of Joe Gibbs oil. Engine has about 1000 miles on it now including some low 11 sec passes{ hope to see high 10;s this week end} Bottom line the engine builder should stand behind his (her) work. Good luck with your motor.Keep us posted on the out come.