About this 3D model

First, I would like to express my sincere gratitude to the original author for their ingenious design. However, after extended use, I encountered some issues with the model's smooth operation. Therefore, I attempted to identify the source of the problem. Firstly, I would like to express my gratitude to the original author for their ingenious design. However, after prolonged use, I still encountered some issues with smoothness. So I tried to identify the problem. I discovered that filament tends to become lodged in the area circled in red. Thus, I aim to design a component that facilitates the smooth passage of filament through this region. I found that consumables are particularly prone to getting stuck in the red circled area, so I want to design a part that can allow consumables to pass through this area smoothly. This is a straightforward component that can be rapidly printed. The internal structure is conical, facilitating the seamless flow of filament. This is a very simple part that can be quickly printed, and the internal structure diagram is conical, making it easier for consumables to pass through more smoothly. This is the link to the work published by the original author. This is the link to the work published by the original author. https://makerworld.com/zh/models/18174#profileId-17021