Cm870 upgrades

[Running rough]

(01-26-2017 )Rig Wrench Wrote:  Well, its alive. Just got to do some finishing touches to it. Sounds good. Everything seems in check. One question i have though, is when it is first started, it seems very rough, rpms fluctuate back and forth quite a bit, it levels off after it warms a bit. It has done this ever since I can remember, I feel like the 3 other cm870s did the same thing. Anyone else run into this?
Thanks again for the input and kind words
What it started out

just curius how many hours or miles you had on it and what justified a rebuild, what shape were the liner seats in, did you have to cut them