"5lb over stock", Thats why the gasket failed, the stock suzuki studs are a precision machined items, (unlike APE junk) torque as per Suzuki spec's no more, When you give them extra lb you exceed the design parameter's.` In my garage I have two oil cooled turbo bikes, one has std studs the other APE, guess which bike has a oil weep?, yep the APE head studs are the problem! Both bikes have been on the road some time, seeing up to 20psi, the APE studs will at some point be removed and chucked in the bin, utter garbage........