Version 2.82 expanded support for newer chipset generations released at the time:
The engine features a standard 2-bolt mounting pattern common to most .46 engines. However, the crankcase is slightly wider than a typical .21. You will need: Xtm Miracle Thunder 2.82
Symptom: Power fades after 3 minutes; the fuel bubbles in the tank. Cause: Lean HSN or poor cooling head contact. Fix: Back out the HSN 1/4 turn. Also, check that the aluminum cooling head isn't cross-threaded against the glow plug. Version 2