Junghans B20 clock--suspension spring question

[LittleWatchShop]

I bought this clock years ago and just set it up on a shelf.  Now I am servicing it.

I do not think (virtually certain) this is the correct suspension spring setup.  Notice that the tether point (what is the correct term) has been spread to accommodate the spring that was with the clock.  I do not like that.  I am going to fix it.

[LittleWatchShop]

I think it is the wrong spring.  Correct style, but too thick.  I have shaved it down.  Presently being tested on the bench.

[RogerH]

It looks to be a modern replacement (You can buy them in bulk on Ebay) - not the best quality and often thicker than the originals hence the need to spread the cock (which I believe is the unfortunate term for the suspension spring holder - it certainly is in long case movements) otherwise it looks to be in good condition.

[oldhippy]

Roger is bang on the nose with his post. Avoid those plastic block s/springs they are no good cheap rubbish.