Thanks for that info Wharf! "almost a tightness in my lungs" that is how I would describe it. I vaped a lot of RY4 monday and part of tuesday. I had not seemd to have any problems with the cherry tobacco or casablanca before. I'll lay off the RY4 for a couple of days and see if that was it. Maybe it was something else bothering me and not simply the 30% VG. Like I said, I have no problems with PG, but a little VG is nice for vapor, so it it nice to find what percentage I can handle. I have mixed 90/10 and 80/20 and been completely fine. Thanks again!
... The eJokers is at 8 days and counting from the shipping notice with no change on the tracking - that's from NY to Boston. My RY4 shipped a day later and was here in 2 days., which is normal for NY to MA. Oh well .......