Update coax stripping sizes, Extend switch soldering hint, change sliders to fixed height

[MyIgel]

• Update coax stripping sizes to be more realistic / match the pictures
• Extend switch soldering hint to add hint how to eventually fix them after getting too hot
• Change sliders to fixed height or else they can only be navigated by keyboard as the back / forward button moves position when changing pictures and thus is not really clickable to move between pictures