I bought a Savinelli 109 a couple months ago. I love the smaller dimensions, the light weight and could clench it the whole day!

The issue I have is packing the pipe. The chimney is 17mm (.7") in diameter and 36mm (1.4") deep. I can never get it to smoke to the bottom, despite relighting all the time, and always toss out a good amount of unburnt tobacco at the end.

What could be the issue? Any tips for packing smaller pipes like this?