distributer cap mods?

I'm ready lol, While i was on my lunch break, i decided to grab my torque wrench and torque the intake manifold bolts to 20 ft lbs pf torque, they were all well under that, I have 3 studs in instead of bolts and i can not torque them to 20 ft lbs or they will break. Ask me how i know that... They must be real old and brittle, But after torquing all the bolts to 20 ft lbs it did help my idle, but it didnt solve it, so that is making me an even bigger believer that it is a vaccum leak at the intake manifold.
I bought a new fel-pro intake manifold gasket set and a bottle of the right stuff gasket maker.
My plan, This saturday afternoon sometime, pull the truck into the shop and pull the intake off, clean everything as well as i can, Only use the old studs as a way to make sure i put the intake on straight as possible. Then i will take the studs off and use only 5/16 bolts all torqued at 20 ft lbs. I will let the right stuff gasket maker that i plan to use dry over night saturday night, then i will fire up the engine sunday afternoon some time and run it at full operating tempature for around a hour os so, then i will shut it off and let it cool all the way down and then i will go re-torque all the bolts to 20 ft lbs again. Does this sound like a plan?
I'm pretty sure them stupid studs are causing a problem because i am not able to torque them down, i have broken 2 studs before at 20 ft lbs of torque, and i had to use an easy out to get the broekn studs out and it was just no fun at all, so i dont go near them studs with the torque wrench, i just tightend up with a 3/8 drive ratchet and socket and called it good, but aparently they must all be torqued or it will leak.