you have a place around that deals in pipes?
I have my own Bowl reamer and if you would have said something earlier I could have sent my extra.
As far as the stems I usualy boil them to get them clean. I put them in when the water is cold and let boil.
Some will tell you not to do that but it works for me.
I repeate the process untill I'm happy.
There are solutions that you can pick up to do the job also.
If it is a collectors piece then let the profesionals do it