I just had my WP4 Quest pellet stove checked and cleaned (I had tenets using it for 3 years). It needs to have door gasket and high limit switch replaced. They want to charge me another $300 to do those tasks. How crazy am I to think i could just do both tasks myself?

I want to build a gas fireplace in my house. There is currently no fireplace at all so need ventless. I am looking to buy a used insert and will have a propane intake delivered. Has anyone done This? [list] [*]good complete video's, how to document site, book? [*]Will a vented insert work for ventless logs? If so what would have to be done? Sheet metal over the vent holes? [*]I need to build a hearth. Thinking 2×10 base with faux rock and tile top. Thoughts? [*]Do I cut the sheet rock on the existing wall and frame around the insert with 2×4s or leave the sheet rock in place and framing with 2×4's attached to studs behind sheetrock? [*]If using faux rock on the hearth base and all the way up the wall do I use standard sheetrock or concrete backer board? [*]Any other considerations especially from a safety stand point? [/list] thanks! Wade