Screw sizes don't match the CAD

[HumbleDeer]

Re: Vz235 Mellow Printhead manual page

A couple screw sizes in the build guide don't match the CAD. Which one do we pick as the correct one?

The CAD also specifies all printhead screws to be low profile versions, but the manual does not. Which type is included in the Mellow kit?

Kit parts:
| Part                         | Location                                 | Info                         |
| :--------------------------- | :--------------------------------------- | :--------------------------- |
| M2.5 x 5mm <br/> Quantity: 2 | **Layer**: 3 <br/> **Box**: VZ330 Box 6  | Ultra Low Profile screwheads |
| M3 x 5mm <br/> Quantity: 4   | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
| M3 x 6mm <br/> Quantity: 16  | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
| M3 x 6mm <br/> Quantity: 6   | **Layer**: 3 <br/> **Box**: VZ330 Box 6  | Ultra Low Profile screwheads |
| M3 x 8mm <br/> Quantity: 2   | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
| M3 x 10mm <br/> Quantity: 2  | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
| M3 x 30mm <br/> Quantity: 2  | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
| M3 nut <br/> Quantity: 2     | **Layer**: 3 <br/> **Box**: VZ330 Box 6  |                              |
|                              |
| Back part of printhead       | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Goliath Hotend               | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Adapter plate                | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Top plate                    | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Bottom plate                 | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Side pieces                  | **Layer**: 3 <br/> **Box**: VZ330 Box C  |                              |
| Belts <br/> Quantity: 2      | **Layer**: ? <br/> **Box**: accesesories |                              |

Some don't even match within the manual page's BOM and the actual assembly step.

For example:

Parts used:
| Part                                            | Location                                |
| :---------------------------------------------- | :-------------------------------------- |
| M3 x 6mm (ultra low profile ) <br/> Quantity: 2 | **Layer**: 3 <br/> **Box**: VZ330 Box 6 |

|:-|:-|
| ![Part 1](../../assets/images/manual/vz330_mellow/gantry/printhead/step7_part1.png)  | &#8226; Attach the preassembled extruder to the printhead with the M3 x 5mm ( ultra low profile ) screws |
{: .instructiontable}

[HumbleDeer]

Some minor improvements to this file and its formatting were comitted on my branch manuals-bom-consolidation:
https://github.com/HumbleDeer/vzbot3d-docs/blob/4ec0aa0dbc47fa5f3252cf820fee364fc1f07587/docs/vz235_mellow/gantry/printhead.md