Just picked a new bare head, the guy at the machine shop tells me I have to use a "priming canister" to properly prime and bleed the new lifters. If I don't then the lifters are going to come apart and destroy my motor!? I checked with best friend Google, and I can't even find a reference to this elusive canister. I'm thinking its kinda BS seeing how we've been doing by the book this whole time. Any thoughts?