I have successfully suppressed the rolling of an integrated rol-6(su1006) transgenic strain by crossing it into the background of the sqt-1(sc13) mutant.
The sc13 mutant worm strain is available from the CGC. Have not tried this by injecting a sqt-1(sc13) plasmid.
Regarding 1. Snug: I believe I did asked James Kramer (e-mail), but have not heard from him.
Regarding 2. Barth: thanks for posting - that sounds encouraging (!)
Regarding 3. dreiner: ‘mediocre’ … that also sounds interesting.
Together think, - I guess, it might save me some working hours if I could receive the original plasmid -,
however if there is no other way: I might end up PCR-ing out of the sqt-1(sc13) mutant and remaking the plasmid …