Red thread locker and soaking it will probably make those bolts completely unremovable without breaking the flange for the muffler. Do not ask me how I know this...I ended up breaking off the muffler, drilling out the bolts and rethreading for larger bolts. Red locktite is not serviceable and is design for items that are not to be removed again

As far as starting a 160 here is what I do. For the first start of the day, open the throttle, squirt some fuel right into the carb, close the htrottle and rotate the prop a few turns to get the fuel into the cranckcase and cylinder. Now attach the glow driver and using a stick and not your fingers, bump the prop backwards against compression quickly. Compression will send the prop in the correct direction and will usually start the engine on the first flip.

It takes practice to get the flip right, but once you get it it will become like clockwork