Tubing directly into 14mm gong should work. You can also get a 14mm vape adapter. They're everywhere! I know... sometimes kind of hard to find. This is one cheap source:
oregonglassblower on ioffer. $19 incl s/h. He sometimes has some with tubing connector at 90 degrees, and will do whatever you need custom for pretty cheap if you ask.
To clean glass there is a good bit of info throughout this thread. Do a search for this thread only (Search function above on right). This thread has tons of good info too:
How to clean vape parts and reclaim resin.
Forget about the scraping and toiling, though. Short answer is get yourself some Isopropyl alcohol (aka ISO) in 90% strength or better. Soak all glass and screens in that for an hour or so and rinse. Might need a quick scrub with an old toothbrush, but will rinse clean. If you want to reclaim your resin, use as little alcohol as possible and evaporate the alcohol off. SEE THE LINK FOR MORE INFO!! Best not to try this without reading a little if you don't want to get alcohol poisoning.
You could do the same with your tubing, but I don't. Seems like it would be a real pain in the ass!! I replace mine as needed. One trick I found on FC years ago that tried a few times... Get yourself a wire coat hanger, a piece of good string longer than your tubing and a screw with a head that barely fits in the tubing. Feed the string through the tubing with the coat hanger (after bending it straight). Tie the screw tightly to the string and pull it back through slowly while working it through best you can from the outside. The screw head will squeegee a good bit of the resin out. Scrape that golden goo off and vape it up!!
For the most part, the tubing only gets ganked up at the end next to the Q, so I usually snip that inch or so off when it gets too gooey. As the tube starts getting too short (or too dirty all the way through), just replace it.
Whatever else you do - GET SOME SILICON TUBING!!!! You will probably enjoy it much more than the stock pvc crap. Make sure you get med grade silicon. It has virtually no smell or flavor and is much more flexible (so you don't push your glass off the table with the rigid tubing!). It can be had on Amazon and a few other places and has been referenced, linked, etc throughout this thread more times than I dare count!
So.....
learn to use the search function and skim through this thread as much as you can! More info than you'll ever know what to do with! Just sit down at the computer with whip or bag in hand and start reading.
Just so all you impatient youg'ns don't blow up the thread asking about where to get silicone tubing (again!), here's the link - at least this is what I use.
Amazon Silicon Tubing It can also be found other places in other lengths, but IMO this is the best bang for the buck incl s/h. 25' lasts me a couple years of nearly daily moderate vaping. Or... a few who are looking for it may want to pool together and split it. You only need a couple of feet at a time.
EDIT: Way2.... missed your post before posting mine but was glad to see you suggested oregonglassblower, too!