Help with Long putter ferrule. .355 Into a .370 shaft

[Spoon]

Guys would like your inputs on what I should do with this build. Long question short, I am rebuilding my EPon zen putter. I want to keep the original ferrule.
 

Been practicing how to remove iron ferrules w heat and hot water and have been successful in saving them without any damage. 
 

the EPon zen ferrule is a long ferrule. Original shaft is a .355 shimada taper tip shaft. The shaft I am using is a .370 Muzik Dogatti carbon shaft. No issue sanding the tip to fit the hosel. I’m worried about the ferrule splitting or warping when inserted into the shaft. 
 

will the old hot water trick work in softening the ferrule Into fitting into the .370 shaft? If it won’t work I won’t bother disassembling and will use shaft on another putter. Thanks. 
 

 

[Socrates]

Use a drill or reamer to ream out the ferrule.  Slow drill speed or you will melt it.  Alternatively, use a rat tail file and put the one end in a drill to spin it and increase the bore size.

 

 

[Spoon]

39 minutes ago, Socrates said:

Use a drill or reamer to ream out the ferrule.  Slow drill speed or you will melt it.  Alternatively, use a rat tail file and put the one end in a drill to spin it and increase the bore size.

 

 

Thank you. Not comfy with the drill. Funny you mention the rat tale file. Was planning to do just that  by hand. 

Regarding rat tail in the drill? Il put the pointy end in the drill ? Never tried that one 😀

[Socrates]

1 hour ago, Spoon said:

Thank you. Not comfy with the drill. Funny you mention the rat tale file. Was planning to do just that  by hand. 

Regarding rat tail in the drill? Il put the pointy end in the drill ? Never tried that one 😀

Yes.