Re: Chain Stretch???
Yes, stretching (wear) is normal especially with the kit supplied #415 chain. Adjustments are just something you learn to live with or you replace the chain with a good industrial quality #41. Even a high quality chain will wear in a little and require tightening after a few miles but after that it will retain the tension better and wear a lot less. It is also less prone to having tight links/rollers and run smoother through the sprockets.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"