OK, thanks to the help of others(Gaieus and Jean-Franco and plug in authors) I was able to improve my welded joints so that they were tremendously better than my initial attempts - see attached file. Basically the soap skin bubble plugin with -ve bubble. Also my first attempt at layout. Thanks for the help and as always, appreciate any feedback.
Regarding the overdone factor, which is definitely high for this simple project. Besides having a compulsiveness problem with having representative model forms, it is also a technique learning exprience for me. Thanks again.