Mighty fine "twin thumper" Jim , powered by a desirable cutaway J20G. NICE !
The dogs don't like it much Bruce 
Lol...never thought about that , but I know that's right 😄
I really like the "New & Improved" trip hammer.
Thanks Bruce, my skills have very 'slightly' improved in the 6 years since I built this so it was good to break it down completely and rebuild it and fix a few things.
Very much an understatement Jim , your skills have come along impressively . I look at some of my early work and just smile. I remember back when Dean Williams was making SV valves and thinking Wow , I wish I could do that...😄👍