Last year, we were grinding down long bolts because of excess weight, and low and behold, a little turbine oil for the air cutter somehow worked its way into the Jag and we lost a little bit of that magic white smoke

.
We've also found out that at least two of the Jags one of the little thingamajiggers on the board was broken/popped/black/missing.
Since then the majority of what we have been using is only Vics, not likely we'll be going back to Jags anytime soon.
The window motors don't like jags either, period.