Help installing stove pipe

[Hari Seldon]

Hello
I bought a used Waterford Shamrock wood stove in a house I bought. The house previously had the chimney connection and hearth installed.
My question is about the stove pipe. I bought single wall pipes. The connection to the chimney has a double wall pipe
What is the best way to attach single wall pipe to double wall?
The 36" piece comes cut down the side requring sealant. The longer pieces sold in home depot and tractor supply came like this. Would it be better to buy one that isnt cut?
Thanks
[GALLERY=][GALLERY=][/GALLERY][/GALLERY]

 

[mellow]

Find out what brand of pipe that thimble is.

Did you get a chimney inspection done when buying the house?

 

[Hari Seldon]

Selkirk metalbestos thimble.
Haven't had chimney inspected yet

 

[mellow]

Before going any further I would advise you to have a professional to come clean and inspect that system. They can also help you with matching up the right pipe.