economic 318 aftermarket heads

i say his machinist is full of it... old gas made a valve stick, please.... if you bent a pushrod then there is no way the valve was stuck on its own. your timing chain is likely bad (slipped a tooth or 3) or you revved the heck out of it and floated them... get a t-chain, a p-rod, and a valve and go back to driving it till you can buy what you want.