Thanks for the info Coalminer, I did some research previously and noted that the N-4 is equivalent to a medium-hot, so at this point I have a O.S. #7 as a backup. My friend and I have had them runnin and are all broken in (performed the break-in at a friends auto shop.
Last Sunday was a beautiful did so about 7 of got together and did some further burnin in and then just tried to get used to these monsters. Heck, we must have over ten tanks in them by now. They are wicked fast and handle really well. Our friends that were runnin Savage S's and high dollar trucks could do great wheelies and jumps but couldn't touch us when we set up a small course. I have changed my rear shock to a dual shock system usin the shock Hop-Up kit for the TGM-02(part #53545. My buddy stayed with the stock shocks and yellow springs (part #9404697). I will get some pictures up once we finish our body paints and decals.
Now for the bad news, my buddy hit one of the marker buckets while turnin and doin about 30mph and toasted his frontend. Bent shock piston rod and broke upper and lower A arms. Later in the afternoon my grandson was usin my Nitrage and somehow broke the servo saver. Oh well, parts are on the way from Tamiya, Vellrip and JR-RC, hopefully it won't take that long.
Anyway, these Nitrages are a blast