Right. Sounds logical. I'll put a couple of winds on myself then with compression fittings; though I'm trying to avoid compression fittings where possible - I could never guess how tight to do them and have had a fair number of leaks and drips when I've used them previously. Too slack they leak, too tight and the olive distorts and they leak. Could do with a torque wrench at an ideal setting.
My end feed solder joints seem much more reliable and error proof - well so far. When I turn on my next stop tap I'll be testing around 40 joints! Fingers crossed as I don't fancy re-soldering any - some are very inconvenient to get to.