Hope you get some real fun out of it!!
i love mine, was my first largescale. then had doubts and recently bought 5ive after giving in to all the good feedback from others here, the 5ive is a great truck, but doesnt give me anywhere near as much pleasure to drive as the DBXL.
I would defo recommend swapping out the diff oils asap, i went for 100k in centre 60k in front and 30k in rear, it handles like a totallly different car, so damn pleasurable to drive.
Have Losi worked on the driveshafts on latest batches of DBXLs? Not had any issues with pins after a fair few hours of hard love and lots of other bits failing but not shaft related. maybe just luck.
I did however have to replace the steering servos on both DBs after circa an hours use, both stripped the nylon internals. savox 0240s have been excellent since.
Final upgrade ive really liked is the 29cc ESP head kit, feels like a lovely balance of power with my samba pipe not too savage but plenty?