[s-cars] Sift Rod weighting

[jpb3]

I am going to install the 034 SSK, formally known as the Billzcat SSK,
today hopefully if someone can chime in here.

I have heard of weighting the shift rod while doing this and envision
melting some fishing weights down with a torch (acetelyne or will
butane do it?) and pouring them into the shift rod somehow. Is this
correct?

Anyone who has done this care to share their experience? I would like
to make sure I have everything I need before I begin.

Thanks,
John