Okay I have recently bought and restored an estate Peterson 313. Over the last few days I have tried smoking various tobaccos in this pipe however cannot seem to keep anything lit. So far I've tried Escudo, bald headed teacher and Dunhill EMP (which seems to smoke well in my other pipes including a peterson 307) but none of them stay lit for more than a few minutes. I might also add that I've tried different packing methods, slowing my cadence and sipping rather than puffing. It has been raining for the last few days as well and I always smoke outside under the patio. So my question is; is this problem due to the pipe bowl shape being very small and narrow or could it be the weather making the humidity too high to keep the tobacco burning?