Sounds like your driveway apron is the culprit. In simplest explanation, the apron is the transition from the depressed curb elevation to the sidewalk elevation. Further, the apron lies in the right-of-way of the road, and technically is not yours to do what you please with. It belongs to the local governing body, and you are technically required to maintain it to their standard - at your cost of course. So, someone will likely frown upon milling it down (what the process is called) because it does leave an unappealing surface that is less durable than what the existing, finished surface is (not the venue to discuss the engineering and science of concrete).
How much rise do you need not to scrub? You indicate using the Linx levelers but not how many. At my winter storage, my TT is parked next to a 2300 and the rear Bigfoots are only about 8" off grade by my estimation. If you only need an 1.5", why not get a treated 2x to lay out? Little easier than Linx and fairly inexpensive.