my experience with ALL chrome pans over the 50+ years i have been playing with these aggravating pieces of "stuff". this included all makes of engines and transmissions. i even went to all the usual fixes, sanding the chrome off the rails, flattening the rails, bolt hole "stiffeners, ALL kinds of gasket manufacturers [with the exception of SUPERFORMANCE], different RTV's [maybe i should try ATV'S ? ] Right Stuff, and similar products with, and without, gaskets, you name it. if they don't leak at start up, just wait, it will, not taking long to start. re-tighten bolts, etc. so it comes down to stock pans and paint, or aluminum pans. just my experience. your mileage may vary.......