I've had three meerschaums, a Baki, an IMP, and an SMS. The draw on each was problematical. Careful cleaning results in minor improvement that lasts about 3.5 seconds. Not my favorite medium for enjoying tobacco weed. My only suggestion is to separate the bit and shank and suck on each to see where the restriction actually lies, then do what you can to remedy it. If successful, the improvement might last a bowl or so. I almost think the material swells up from moisture or something. Don't really care; I've pretty much written them off as a viable smoke. Their superiority to briar is non-existent. [and with those final words of encouragement, he exits stage right]