If I keep the 4th string raised a half-tone with a knee-lever.
I found out I had a half-stop on the 5th string using the C-pedal.
(The pedal that raise both 4th &5th string a full tone)
Using the full C-pedal with 4th string lowered also worked fine.
A little blue-shuffle example going from E to A
1----------------------------------------
2----------8---------8-------8-----------
3----------8---------8-------8-----------
4----8C~8R----8R-------------------------(don't release knee-raise)
5----------------------8~~8c-------------(half-C-pedal)
6-------------------------------8~~~~~~--
1 . . 2 . . 3 . . 4 . .
1----------------------8-----------------
2----8-----------------8--------------8~~
3----8--------8-----------------8-----8~~
4-------------8R----------------8R-------(don't release knee-raise)
5-------8~~8c----8~~8c----8~~8c----8c----(half-C-pedal)
6----------------------------------------
1 . . 2 . . 3 . . 4 . .
1----------------------------------------
2~~~~8LL------8LL------8~~8LL---8LL---8LL(full step lower Eb -> Db)
3~~~~~~~------8--------8--------8--------
4----------------------------------------
5----------8--------8--------8-----8-----
6----------------------------------------
1 . . 2 . . 3 . . 4 . .
1----------------------------------------
2-------------------8LL---------8LL------(full step lower Eb -> Db)
3----------8-----------------------------
4----8L~8C----8C~8L----------8C----------(don't release knee-lower)
5----------------------8~~8C-------------
6----------------------------------------
1 . . 2 . . 3 . . 4 . .
Try to let all notes ring together on this last one
Bengt