In the summer (75 - 77 degrees in my tuba room) it has been offering (almost) A=440 all the way in, and - after playing for several minutes - I might (??) be able to pull out the main slide 3/16".
Winter is upon us, the house (and - likely - venues) are closer to 65 degrees, and it was time (Carmina Burana, this weekend, and a ton of Christmas gigs that feature a bunch of "fat jolly" tunes) to get this thing more reliably up to pitch.
It was complicated, because it is an inside/outside slide, and also features a cross brace (with feet larger than the ferrules ended up being), but it's now done.
Uncharacteristically, I actually took some in-progress pictures.
THE single trickiest thing was shortening the ferrule on the INSIDE slide tube which comes out of the 5th rotor (as I didn't quite think it through, and actually needed a shorter one there as well...so I had to shorten the EXISTING one
- on the SLIDE tube side of it, and
- WITHOUT removing it and bunging it up...
...but I thought of a way to do that.
Anyway...I took more than an inch (yeah...not all that much, but just enough) off the instrument. I can now deal with tuning, will worry less about focusing pitches "up in/above the staff", and also (if there's unexpected traffic, a wreck, road construction, sleet, or whatever) if I find that there's no time to warm up the instrument, I'll still be able to "just" manage, as far as tuning is concerned. It's nearly 7:30, and a bass trombone customer is about to arrive from east Tennessee, so I'm going to throw up the pictures I took and may-or-may not go back - right now - and type comments. The pictures are in order, so...
Also, I tore the thing apart before taking the first picture. (I assume folks are smart enough to figure that out...even though I stated it.
![Laugh :laugh:](./images/smilies/e21533.gif)
I have more to do to this instrument later...two more things that involve shortening (circuits).
![Image](https://i.imgur.com/iW7rwOn.jpg)
![Image](https://i.imgur.com/EdHGhaH.jpg)
![Image](https://i.imgur.com/tkWDOTD.jpg)
![Image](https://i.imgur.com/465k5c2.jpg)
![Image](https://i.imgur.com/lIymdpY.jpg)
![Image](https://i.imgur.com/WAGMdZ3.jpg)
This ferrule (below) is the one that I shortened on the SLIDE side without removing it.
![Image](https://i.imgur.com/Umo0vNv.jpg)
![Image](https://i.imgur.com/1YZeU34.jpg)
![Image](https://i.imgur.com/fFkoTSu.jpg)
![Image](https://i.imgur.com/q3f49z1.jpg)
![Image](https://i.imgur.com/zXUKoyd.jpg)
![Image](https://i.imgur.com/BUCK6iI.jpg)