Bama,

Now that sounds like the best plan for him.

He does not even need a torque wrench, he can put the thing on hand tight and bring it to the shop for its VIS inspection, of course they will take off the valve and reinstall it when done. Our local shop charges $15 for the VIS.

So if he makes a trade with you and brings his cylinder to his LDS, he will only be out $15 more and be able to use his new cyl.