Here's an approach to eliminating tongue bite.
True tongue bite is similar to an allergic reaction. If you have food allergies, doctors will sometimes put you on an elimination diet. It involve removing foods from the diet methodically, noting if the reaction recurs or doesn't, and adding the foods back to confirm the diagnosis, and finally, after identifying the specific food(s) causing the reaction, avoid those foods going forward.
You can approach the tongue bite problem in a similar way but the process is more simple. This method assumes you are avoiding tongue burn by drying out your tobacco, puffing just often enough to keep the bowl lit and using a well-broken pipe.
In short, the approach is to keep a notebook and jot down your observations for each new blend you try, especially if the blend bites or is comfortable. Restrict yourself to smoking just one blend per day. If you keep records, a pattern will quickly develop and you will be able to see which families of tobaccos, makers of tobaccos, cuts, etc. are causing the problem.
Here is how it might work in detail.
1. Pick a particular blend and note the family, aro, English, straight Virginia, VaPer VaBur, burley, etc. Devote at least one day, maybe two, to smoking that particular blend and no other.
2. If you get tongue bite, note the blend and family. Heal before going to the next step.
3. Try another blend, from a different blend family, and smoke only that one specific tobacco for at least a day.
3. If you don't get tongue bite, note it. Then pick another blend from another blend family, and smoke just that blend for a day or two.
4. Repeat as needed. The key is to methodically smoke just one blend a day and note which ones cause reactions and which don't.
5. Once you have identified one or more blends that bite you, then try other blends in the same family. So, if an aro bit you, go back and try another aro for a day or two. If it bites, you might decide to avoid aros - or at least buy only samples.
If you use this system, you should be able to start identifying which kinds of blends and which tobaccos are tongue friendly for you and which blends to avoid.
Pax