The bar ends aren’t exactly crimped shut. The top of the bar has the foam and to keep the bar circular despite having the foam on there, they kind of squish the bar down so the entrance is no longer round. This is how it looks without the bar end plug:

The white stuff you see is the foam, the bent looking thing is the bar and around that is the grip…

I can’t find the Titec bar you mentioned anywhere on sale… I guess it’s no longer produced. I did consider the Jones bar… But I don’t think I’d wanna get it without trying it. For now I think I just want something that has a similar profile and dimensions of my current bar.

Kg1 is a white king move…? I’m confused what you mean. Maybe you mean Kg8? If so, the bishop is covering that square so the king shouldn’t be able to move there…

If pawn takes the rook on d2, then the other rook goes to h3 for mate

Rd2 and then Rh2 or Rh3 depending on how black moves.

I’m not too familiar with chess notation so hope I got that right