Challenging group Alvin. I tried this object once with my 27-inch under good transparency and seeing with 586x.

no plume and bridge detected, Ambartsumian's knot unsure visible as a stellar popping just S of NGC 3561B, no steadily visible; all three brighter MCG's E detected + an unlabeled stellar galaxy S of MCG +5-27-15

I clearly need another try with larger aperture and better conditions.