I have had this Ellipse pen in the drawer for a couple of months, I played with it or showed it to people every couple of weeks with no issues (i.e. some, but not much use). Last night I went to package it up as a birthday gift and I couldn't get the refill to extend, the upper and lower sections were just slipping almost freely. I exercised the transmission a bit, but no luck. Finally I decided to put a little loctite on the transmission (where it friction fits) and this did the trick. From the beginning, the friction fit of the transmission seemed loose, but early on it worked ok without too much slippage. Is this a common issue? Did I do something wrong?