why HMD doesn't fit with hookah properly ?

There are a few reasons why an HMD might not fit properly with a hookah. Here are some of the most common reasons:

• The HMD is the wrong size: HMDs are typically made in a few different sizes, so it is important to make sure that the HMD you buy is the right size for your hookah. If the HMD is too small, it will not fit on the hookah properly. If the HMD is too large, it will not sit flush on the hookah and could cause leaks.
• The hookah is not compatible with the HMD: Some hookahs are not compatible with certain HMDs. This is usually due to the shape of the hookah's bowl or the way that the HMD attaches to the hookah. If you are not sure if your hookah is compatible with the HMD you want to buy, it is best to contact the manufacturer of the HMD for support.
• The HMD is damaged: If the HMD is damaged, it may not fit properly on the hookah. This could be due to a manufacturing defect or damage that occurred during shipping. If you think that your HMD may be damaged, it is best to contact the manufacturer of the HMD for support.
• The HMD is not assembled properly: Some HMDs require assembly before they can be used. If the HMD is not assembled properly, it may not fit properly on the hookah. Make sure that you follow the instructions that come with the HMD to assemble it properly.

If you are having problems with your HMD fitting properly with your hookah, try the following troubleshooting tips:

• Make sure that the HMD is the right size for your hookah.
• Check the compatibility of your hookah with the HMD.
• Inspect the HMD for damage.
• Assemble the HMD properly.

If you have tried all of these troubleshooting tips and the HMD still does not fit properly, you may need to contact the manufacturer of the HMD for support.