Ken, we are new to the forum but just finished our vents, and installed them today.
First, Jeff Gau at Precision is spectacular! He is the guy in all the videos at Precision. We decided to do it ourself but found the videos on the net were lacking after we got started. The brothers video is good just not great. Some others that are good as well.
Here is what we learned. You CAN do it yourself. You just need lots of patients. That said, the rebuild program is awesome. They powder coat the frames and everything is new on your frames. There were several times during rebuild I almost boxed them up and sent them to Jeff and Greg, but he talked me off the cliff!
I will try and copy and paste the video link we followed. But know, we took one apart completely and rebuilt it just like the Brothers video, and the other we did not disassemble it and did it the Precision video way. They both went back in the truck today with little trouble.
I was grateful for the challenge and the folks at precision were there to answer all the questions we had, where do you find a company like that?