Glad it worked out for you, I kind of like the horn and bell coming from both units. I do not use crew talk much but when I shut down the engines I can’t make out a word they are saying .
I purchased the Legacy PRR E8 AA set that had the powered and non powered units. I thought of buy another set in order to have a powered AA set but in that case you would have to do a lash up as both engines would start in forward. I had a post when Lionel started doing AA sets with both engines being powered that they offer owners of previous issued sets powered and un powered a chance to purchase a powered trailing frame that had Legacy no sounds but would start in reverse so you could take the shell off of your non powered unit and put it on the powered frame. I thought a selling price of $200 to $300 would be OK to get a dual powered Legacy AA set. After all the list price of the powered/non powered set was $1000 (which is list for the dual powered units E AA sets). Did not get much support from the forum.
Oh well I am still happy with the E8s the way they are. Thanks for the update on your sharks.