Went to Home depot to get the elbows for the relocation of evap canister. No luck finding the 90 deg. brass 3/4" elbows. Please confirm that 3/4" is the correct size. Looked in the plumbing section of the store...Correct? The only 3/4" brass elbows I found, were not the ones that I saw in the picture. They were like $6- $7 apiece and the shape was curved, not square like the pics posted here...A part # would probably help also, if available.The other question I had was about the bolts...I know, 1" long, but approx what diameter are they? Thanks in advance for any help.