The worst experience I've had putting a finish on a pen was on a Padauk Cigar, BUT after trying a few times I got smart, I figured the wood was still green, I cut nearly all of my own blanks (and fingers) the Padauk was a piece from a 3x6x48 inch slab, I had cut about 20 blanks and was really getting PO'd,I am no expert but that was the first wood I had trouble putting a CA finish on.
A living genius pointed that I may need to dry the blanks, I popped a few in the Microwave for 20 seconds weighed them and after about 4 or 5 cycles in the microwave (and a butt chewing by SWMBO) they were dry and have turned out some beautiful pens.