I rebuilt the Tecumseh and did not put Loctite on the connecting rod bolts. It ran like a top until the day the connecting rod came through the block, breaking both the top and bottom pieces.
I decided it wasn't worth trying to pick up the parts on eBay, so I junked it. my neighbor was dragging an old Snapper to the trash one day, and I intercepted him. The 11HP B&S ran, but used more oil than gas. I have just finished rebuilding it and am awaiting some seals for the carburetor to finish it up.
B&S painted their engines black, except for Snapper, which they painted the off-white. I would prefer the off-white, but it's very hard to find high-temperature paint that color. The carburetor cleaner took most of the paint off the block and the flanges and flywheel cover are very rusty.
I will post an update once the carburetor is remounted.