I recently upgraded my EGR cooler to Bulletproof Diesel's aftermarket version, along with an oil cooler rebuild. After all of this I am experiencing a hissing from the V-clamp on the y-pipe to turbo connection. Is there a gasket that i may have lost during the procedure? I lost the spring on the v-clamp and purchased a new clamp that did not come with a new spring or T-bolt, is it necessary? Please help, very frustrated!!