I Just got this Estate pipe and it's my 1st dry system pipe of any sort. Seems to smoke fine. However, I noticed that the draught hole appears larger & somewhat jagged compared to my other (non) system pipes; leading me to think it's burnt out at the draught. Can anyone confirm/deny if this is typical for sytems? I wicked some cleaner into the draught & maxed out the brightness of the pictures in order to contrast it as best as possible.