I have never had a probl and they are fast and helpful for all smokers neefs
This was my first Grav purchase but it will not be my last! I have always loved steam rollers and this is my new favorite piece. The glass is thick and solid but not overly heavy and I love the knobs on the bottom to help prevent dropping and to keep the pipe from rolling once you sit it down. It hits exceptionally well but as has been mentioned before the bowl is on the smaller side.
Love it. It has a small bowl so it kinda help conserve
Back in the day(70's & 80's) we called these carburetors. The design is great at the mouth end. No ashes or ground up material shooting into your mouth. I love doing one hitters with this. Another great piece from Grav. Easy to clean also. Yes I would recommend it.